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SpecialNight EventStovetop Recipe

Moonlight Soup — Heartopia Recipe Guide

Moonlight Soup is the most prestigious recipe in Heartopia — a rare Special-category dish made with night-foraged Morel Mushrooms, full-moon Moon Herb, Cream, and Crystal Salt. It sells for up to 504g at Star 5 quality, grants a powerful Night Vision Buff, and is the top gift for the Starlight Festival, Luna, and Captain Drake. This guide covers exactly how to find each rare ingredient, how to manage the critical Lunar Infusion phase without ruining your Moon Herb, and the best strategy for turning each expensive batch into maximum value.

20 min
Cook Time
280–504g
Sell Price (★1–★5)
4
Ingredients
Hard
Difficulty

How to Cook Moonlight Soup

1

Gather Your Ingredients

You need 2x Morel Mushroom, 1x Moon Herb, 1x Cream, and 1x Crystal Salt. Morel Mushrooms only spawn in the Forest between 21:00 and 03:00 in-game time — they glow faintly blue and appear near old logs and tree roots. Moon Herb is collected from the Forest only on full moon nights (once per in-game month), or purchased from the Wandering Merchant NPC for 250g per herb on their rare visits. Cream comes from your Cow or the Farmer's Market at 25g. Crystal Salt is mined from Layer 3 of the Mine (pick it up as a pale blue crystal node), or bought from the Market for 50g.

Tip: Check the in-game calendar for the full moon symbol before planning a Moon Herb collection night. The Wandering Merchant arrives on the 10th and 25th of each in-game month — stock up on Moon Herb on those days if you cannot time your night outings.
2

Prepare the Morel Mushrooms

Open your Kitchen stovetop or the Community Cookhouse. Select "Recipes" → "Special" tab and choose Moonlight Soup. The Special tab only becomes visible once you have unlocked at least one Special-category recipe. Place 2x Morel Mushroom into the preparation slot first. The stovetop shows a cleaning animation — the mushrooms are brushed and sliced automatically. This takes 30 seconds of real time and cannot be skipped.

Tip: Morel Mushrooms stored in a Chest retain their quality for up to 3 in-game days. Forage them the night before you plan to cook and store them — do not wait more than 3 days or they degrade to lower quality.
3

Infuse the Moon Herb

After mushroom preparation, add 1x Moon Herb to the pot. The Moon Herb dissolves into the liquid base over 45 real seconds, turning the soup a luminous silver-blue colour. The stovetop panel shows a Lunar Infusion progress bar. Keep heat at low-medium — high heat destroys the Moon Herb's active compounds and reduces both sell price and the Night Vision Buff duration by half. The Infusion is complete when the progress bar turns gold.

Tip: The Lunar Infusion phase is the most critical quality step. If the heat meter creeps into orange, immediately click the heat control to reduce it. Watch the infusion bar, not the pot animation — the bar is the true indicator.
4

Add Cream and Crystal Salt

Once the Lunar Infusion is complete, add 1x Cream and 1x Crystal Salt. The Cream creates the rich soup base as it combines with the infused herb liquid. Crystal Salt acts as a flavour catalyst that brightens the Morel Mushroom taste and fixes the Moon Herb compounds so they remain active in the finished dish. Stir twice with the on-screen stir button to fully combine. The soup turns a warm golden-silver colour when ready.

Tip: Crystal Salt mined yourself (rather than purchased) gives a "Miner's Blessing" quality tag that adds +0.3 star quality to the finished soup. If you have spare mine runs before cooking, bring a pickaxe to Layer 3 and mine a few Crystal Salt nodes.
5

Simmer and Collect

After all ingredients are combined, the soup simmers for 20 real-time minutes. The pot glows softly during this phase. Do not touch the heat control during simmering — any adjustment resets the simmer timer. When complete, Moonlight Soup appears in your inventory with a star rating from 1 to 5. At Cooking Level 5 with correct technique and Miner's Crystal Salt, Star 4 is achievable. Selling Star 5 Moonlight Soup (504g) is one of the highest single-item gold transactions available.

Tip: Moonlight Soup is worth 504g at Star 5 — more than most items in the game. If you have a batch of Star 5 quality, save it for the Starlight Festival market stall, where recipes sell for 20% above their base value.

Ingredients & Where to Find Them

Morel Mushroom

2x
Source: Forest foraging (21:00–03:00 in-game time only, near logs and tree roots)

Morel Mushrooms are rare night-only spawns. They appear as faint blue-glowing objects in the Forest. Night-time Forest visibility is limited without lighting equipment — the Miner's Lantern (Mine reward) or the Forest Torch (craftable) significantly improve mushroom detection. Typical nightly yield is 2–5 mushrooms.

Moon Herb

1x
Source: Forest (full moon nights only) or Wandering Merchant NPC (250g, arrives 10th and 25th each month)

Moon Herb is the rarest cooking ingredient in the game. On full moon nights, 3–5 Moon Herb plants glow silver in the Forest clearing. The Wandering Merchant is the only non-time-locked source. Stockpile Moon Herb aggressively whenever either source is available.

Cream

1x
Source: Cow in Barn (daily, Farm Level 3) or Farmer's Market (25g each)

Cream is the most accessible ingredient in this recipe. Any quality Cream works — freshness does not affect Moonlight Soup quality because the Lunar Infusion process overwrites the cream quality variable.

Crystal Salt

1x
Source: Mine Layer 3 (pale blue crystal nodes) or Market NPC (50g each)

Crystal Salt appears as translucent blue nodes on Layer 3 of the Mine, mixed among iron and stone. Self-mined Crystal Salt gives the "Miner's Blessing" quality tag (+0.3 stars to finished dish). Market Crystal Salt at 50g is reliable if Mine Layer 3 is not yet accessible.

Sell Prices by Star Quality

QualitySell Pricevs ★1
★☆☆☆☆ Star 1280g—
★★☆☆☆ Star 2336g+56g
★★★☆☆ Star 3392g+112g
★★★★☆ Star 4448g+168g
★★★★★ Star 5504g+224g

Base sell values at the General Store. Starlight Festival market stall sells for 20% above base — hold high-quality batches for the festival.

Best Uses for Moonlight Soup

Highest-Value Special Recipe

At Star 5 quality, Moonlight Soup sells for 504g — making it the most valuable craftable recipe in Heartopia by sell price. Even at Star 3 (392g), it exceeds the profit of nearly every other food item in the game. For players who can secure a reliable supply of Moon Herb and Morel Mushrooms, batch-cooking Moonlight Soup on full moon nights is the single most effective gold-per-cooking-session strategy.

Night Vision Buff

Eating Moonlight Soup (Star 3+) grants the Night Vision Buff for 30 minutes: movement speed at night increases by 20% and your visible area in dark zones (Forest, Mine) expands by 30%. This buff stacks with the Miner's Lantern light radius for effectively unlimited night-time visibility. It is the only way to achieve full-map visibility on Mine Floors below Layer 5 without an artifact item.

Starlight Festival Mandatory Gift

The Starlight Festival (late Fall each year) features a mandatory gift-giving ceremony where every NPC expects a gift from the player. Moonlight Soup is one of only three items that all NPCs accept as a "Loved" gift for this ceremony. Gifting it during the ceremony provides +60 affection per NPC — the maximum possible for this event. Planning 5–6 Moonlight Soups for festival gifting is highly recommended.

Luna and Captain Drake's Favourite Gift

Luna (the Forest Spirit) and Captain Drake (the harbor captain) both list Moonlight Soup as their absolute top-tier gift, giving triple affection (+90 each) whenever they receive it. Luna's max relationship track unlocks the Forest Spirit Blessing; Captain Drake's max track unlocks the Deep Sea Fishing Chart, which reveals hidden fishing spots not shown on the normal map.

Related Recipes

Mushroom Risotto
The everyday mushroom recipe — use when Morel Mushrooms are scarce or Moon Herb is not available.
Autumn Stew
Fall stovetop staple — another high-value NPC gift that shares the hearty soup cooking style.
Starlight Punch
Festival special drink — pairs with Moonlight Soup for the Starlight Festival gift strategy.
All Recipes
Browse every recipe in the Heartopia cooking wiki.

Frequently Asked Questions

When exactly is the full moon in Heartopia for Moon Herb collection?
The in-game calendar marks full moon nights with a silver circle icon on the date tile. Full moons occur on the 15th of every in-game month. Heartopia months are 28 in-game days long. On the night of the 15th, enter the Forest after 20:00 and look for silver-glowing herbs in the central clearing and near the Forest Shrine. Each full moon yields 3–5 Moon Herb plants. The Wandering Merchant also visits on the 10th and 25th — these visits are the non-moon-dependent source.
How long does the Night Vision Buff from Moonlight Soup last?
The Night Vision Buff duration scales with star quality: Star 1–2 grants 15 minutes, Star 3–4 grants 30 minutes, and Star 5 grants 45 minutes. The buff increases night movement speed by 20% and expands your visible area in dark zones by 30%. It does not stack with additional servings — eating a second bowl refreshes the timer but does not extend the duration beyond the single-bowl maximum.
How does Moonlight Soup compare to regular Mushroom Risotto?
Mushroom Risotto (made with common Mushrooms) sells for 220g at Star 3 and provides a basic Energy Restore buff. Moonlight Soup (Morel Mushrooms + Moon Herb) sells for 392g at Star 3 and provides the Night Vision Buff — nearly double the gold value and a unique gameplay-affecting buff. The trade-off is ingredient difficulty: Morel Mushrooms require night foraging and Moon Herb is heavily time-gated. Mushroom Risotto is the daily workhorse; Moonlight Soup is the premium special occasion recipe.
What do I need to unlock the Moonlight Soup recipe?
Moonlight Soup has the highest unlock requirements of any cooking recipe: (1) Reach Cooking Level 5 — the recipe scroll arrives automatically. (2) Complete the "Lunar Secrets" questline (starts after befriending Luna to Friendship Level 7) — Luna teaches you the recipe. (3) Find the Moonlight Soup recipe scroll as a rare random drop inside the Mine (Layer 3 chest, approximately 5% chance per chest opened). Most players unlock it via Cooking Level 5 first.
Is Moonlight Soup worth making given how rare Moon Herb is?
Yes, for players in Year 2 and beyond. By Year 2, you typically have regular access to the Wandering Merchant (who stocks Moon Herb) and consistent Mine Layer 3 access (Crystal Salt). The time investment per batch is high, but the 280–504g sell price range is unmatched. The key strategic decision is reserving Moonlight Soup for the Starlight Festival (when it provides maximum gifting value) and for Luna/Captain Drake relationship advancement rather than purely selling every batch.
What happens if I overheat the pot during the Moon Herb Infusion phase?
Overheating during the Lunar Infusion (heat goes into the orange or red zone) destroys the Moon Herb's active compounds. The soup will still complete but the Night Vision Buff duration is halved (15 minutes instead of 30 at Star 3), and the sell price is permanently reduced by approximately 30% for that batch (treated as a "Degraded" version of the recipe). Given the rarity of Moon Herb, this is a costly mistake — monitor the heat carefully and keep it at low-medium throughout the infusion.