# SKILL.md

## 📖 The Pâtisserie Knowledge Base

### 1. Foundational Ratios (Memorize These)

**Pâte Brisée (for tarts and pies)**
- Flour 100%
- Cold butter 60-65%
- Water 20-25% (ice cold)
- Salt 1%
- Sugar 0-2% (for savory vs sweet)

**Pâte Sablée (for delicate cookies and tart bases)**
- Flour 100%
- Butter 70%
- Sugar 30%
- Egg yolks 10-15%
- Salt 0.8%

**Pâte à Choux**
- Liquid (milk/water) 100%
- Butter 50%
- Flour 50%
- Eggs ~80-100% (variable, add gradually until proper consistency)
- Salt 1%

**Classic French Meringue**
- Egg whites 100%
- Sugar 200% (for hard meringue)

**Italian Meringue**
- Egg whites 100%
- Sugar 200%
- Water 50-60%

### 2. Sugar Stages (Critical Reference)

| Stage | Celsius | Fahrenheit | Visual Test | Primary Uses |
|-------|---------|------------|-------------|--------------|
| Thread | 110-112 | 230-234 | Forms thin threads | Sugar syrups, Italian meringue |
| Soft Ball | 112-116 | 234-241 | Forms soft ball in cold water | Fudge, Italian buttercream |
| Firm Ball | 118-120 | 244-248 | Forms firm ball | Caramels, marshmallows |
| Hard Ball | 121-130 | 250-266 | Forms hard but pliable ball | Nougat |
| Soft Crack | 132-143 | 270-290 | Forms threads that bend | Salt water taffy |
| Hard Crack | 149-154 | 300-310 | Forms brittle threads | Brittles, lollipops |
| Caramel | 160-180 | 320-356 | Golden to deep amber | Caramel sauce, spun sugar, bases |

Note: Always use a calibrated thermometer. The cold water test is a reliable backup.

### 3. Chocolate Tempering (Non-Negotiable for Professional Results)

**Dark Chocolate (60-70% cocoa):**
- Melt: 50-55°C (122-131°F)
- Cool: 28-29°C (82-84°F)
- Reheat: 31-32°C (88-90°F)

**Milk Chocolate:**
- Melt: 45-50°C
- Cool: 27-28°C
- Reheat: 30-31°C

**White Chocolate:**
- Melt: 40-45°C
- Cool: 26-27°C
- Reheat: 28-29°C

Methods: Seeding (best for beginners), Tabling, Microwave with extreme care.

### 4. Common Catastrophes & Their True Causes

**Choux pastry did not puff:** Oven temperature too low at start (must have initial blast of 220°C+), batter too loose (added eggs too quickly), no steam in oven, opened oven door too early.

**Macarons feet did not develop or were hollow:** Over-macaronaged (batter too thin), under-macaronaged (no skin formed), oven too hot (skins cracked before feet could form), humidity issues.

**Caramel crystallized:** Sugar crystals on side of pan not washed down with wet brush, stirred during early stages, thermometer not calibrated, seed crystals from dirty utensils.

**Ganache split:** Added cream too hot or too cold, chocolate and cream temperature differential too extreme, over-sheared with immersion blender, poor quality chocolate with unstable cocoa butter.

### 5. The Modern Entremet Construction Framework

A professional layered dessert follows this architecture:

1. **Base** (provides structure): Dacquoise, joconde, brownie, sable, puff
2. **Crunch Layer** (textural surprise): Feuilletine, streusel, praline, candied nuts
3. **Cream/Mousse** (the emotional center): Bavarian, diplomat cream, ganache, parfait
4. **Insert** (flavor bomb): Fruit gel, compote, curd, confit
5. **Glaze or Coating**: Mirror glaze, velvet spray, neutral gel, chocolate spray
6. **Garnish**: Micro herbs, edible flowers, gold leaf, tuile, chocolate decorations

**Rule of Three Textures Minimum**: Crisp + Creamy + Chewy or Gel-like is the baseline for interesting desserts.

### 6. Flavor Architecture Principles

Balance the five pillars in every composition: Sweetness, Acidity, Bitterness, Salt, and Umami. The best desserts contain at least three contrasting textures and a clear flavor journey from first bite to finish. You are a master of both classical French pairings (chocolate-raspberry, lemon-thyme, chestnut-vanilla) and thoughtful modern combinations (miso-caramel, olive oil-yuzu, smoked salt-dark chocolate).