Rich Custard Base
A richer base with higher fat content—positioned between traditional gelato and American ice cream. Ideal for bold flavors that benefit from fat’s carrying capacity: chocolate, caramel, nuts, and indulgent combinations.
Characteristics
Section titled “Characteristics”| Property | Value |
|---|---|
| Fat % | ~16.9% |
| MSNF | ~7.8% |
| Total sugar | ~20.4% |
| PAC | ~230 |
| Target overrun | 30–50% |
| Character | Rich, creamy, indulgent |
Formula
Section titled “Formula”| Component | 1 Qt | 2 Qt | 3 Qt | 4 Qt | 5 Qt | 6 Qt |
|---|---|---|---|---|---|---|
| Custard | ||||||
| Whole milk | 245g (1 c) | 490g | 735g | 980g | 1225g | 1470g |
| Heavy cream (36%) | 238g (1 c) | 476g | 714g | 952g | 1190g | 1428g |
| Egg yolks | 100g (5) | 200g (10) | 300g (15) | 400g (20) | 500g (25) | 600g (30) |
| Granulated sugar | 150g | 300g | 450g | 600g | 750g | 900g |
| Fine sea salt | 1.5g | 3g | 4.5g | 6g | 7.5g | 9g |
| Base total | ~735g | ~1469g | ~2204g | ~2938g | ~3673g | ~4407g |
Vessel Requirements
Section titled “Vessel Requirements”| Batch | Quart Jars | Base per Jar |
|---|---|---|
| 1 Qt | 1 | ~735g |
| 2 Qt | 2 | ~735g each |
| 3 Qt | 3 | ~735g each |
| 4 Qt | 4 | ~735g each |
| 5 Qt | 5 | ~735g each |
| 6 Qt | 6 | ~735g each |
Calculated Values
Section titled “Calculated Values”Fat Breakdown
Section titled “Fat Breakdown”| Source | Amount (1 Qt) | Fat Contribution |
|---|---|---|
| Heavy cream (36%) | 238g | 85.7g |
| Whole milk (3.5%) | 245g | 8.6g |
| Egg yolks (30%) | 100g | 30.0g |
| Total fat | 124.3g |
Fat % = 124.3g / 735g × 100 = 16.9%PAC Calculation
Section titled “PAC Calculation”| Sugar | Amount (1 Qt) | PAC Value | Contribution |
|---|---|---|---|
| Sucrose | 150g | 100 | 15,000 |
| Lactose (in dairy ~4%) | ~19g | 100 | 1,900 |
| Total | 16,900 |
PAC = 16,900 / 735g × 10 ≈ 230Method
Section titled “Method”Combine Sugar and Salt
Whisk sugar and salt together in a small bowl.
Prepare Yolk Mixture
In a large bowl, whisk egg yolks until smooth. Gradually add sugar mixture, whisking until fully combined and slightly lightened.
Add Dairy
Whisk in milk, then cream, until homogeneous.
Fill Jars
Divide base evenly among mason jars. Leave 25mm (1”) headspace. Add any sous vide steeping ingredients now.
Seal and Cook
Finger-tighten lids. Sous vide at 181°F / 82.8°C for 50 minutes. Swirl gently at 25 minutes.
Strain and Cool
Strain through fine mesh. Cool in ice bath to below 40°C / 104°F.
Age
Refrigerate minimum 4 hours, preferably overnight.
Churn
Churn to –6°C / 21°F draw temperature.
Harden
Transfer to storage container. Freeze minimum 4 hours.
Sous Vide Parameters
Section titled “Sous Vide Parameters”| Parameter | Value |
|---|---|
| Temperature | 181°F / 82.8°C |
| Time | 50 minutes |
| Agitation | Swirl at 25 minutes |
| Vessel | Quart mason jar, lid finger-tight |
Flavor Pairing Recommendations
Section titled “Flavor Pairing Recommendations”This rich base excels with:
Chocolate
Section titled “Chocolate”- Dark chocolate (64–72%)
- Milk chocolate
- White chocolate
- Cocoa nibs
- Hazelnut (gianduja applications)
- Pistachio
- Almond
- Peanut butter
Caramel Family
Section titled “Caramel Family”- Salted caramel
- Dulce de leche
- Brown butter
- Toffee
Indulgent Combinations
Section titled “Indulgent Combinations”- Cookies and cream
- Brownie
- Cheesecake
- Malted
Variations
Section titled “Variations”With Dextrose (Softer Texture)
Section titled “With Dextrose (Softer Texture)”Replace some sucrose with dextrose for higher PAC (softer texture):
| Component | 1 Qt |
|---|---|
| Granulated sugar | 120g |
| Dextrose | 30g |
PAC increases to ~270, producing softer scoop at serving temperature.
With Brown Sugar
Section titled “With Brown Sugar”For caramel/toffee notes:
| Component | 1 Qt |
|---|---|
| Granulated sugar | 100g |
| Dark brown sugar | 50g |
Brown sugar adds molasses notes. Note: brown sugar is hygroscopic and may slightly affect texture.
Reduced Sweetness (For Chocolate)
Section titled “Reduced Sweetness (For Chocolate)”When adding chocolate, reduce base sugar:
| Component | 1 Qt |
|---|---|
| Granulated sugar | 100g |
| Dextrose | 25g |
This accounts for chocolate’s sugar content and prevents cloying sweetness.
Comparison: Lean vs Rich Base
Section titled “Comparison: Lean vs Rich Base”| Property | Lean Custard | Rich Custard |
|---|---|---|
| Fat % | ~9.8% | ~16.9% |
| Cream ratio | 120g per Qt | 238g per Qt |
| Character | Bright, clean | Rich, coating |
| Best flavors | Delicate, fruit | Bold, chocolate, nut |
| Overrun target | 25–35% | 30–50% |
| Serving temp | –12°C | –14°C |
Troubleshooting
Section titled “Troubleshooting”| Problem | Cause | Solution |
|---|---|---|
| Too rich/heavy | Fat content high for application | Use lean base instead |
| Greasy mouthfeel | Over-churned or excessive fat | Shorten churn time; reduce cream |
| Too hard | PAC too low | Add 30g dextrose, reduce sucrose |
| Flavor muted | Fat coating tongue | Reduce fat or use lean base |
| Butter formation | Over-churned | Stop at –6°C draw temp |
When to Choose This Base
Section titled “When to Choose This Base”Choose Rich Custard when:
- Making chocolate-based flavors
- Working with nut pastes or butters
- Creating caramel or dulce de leche flavors
- Desired outcome is indulgent, premium character
- Serving temperature will be –14°C or colder
Choose Lean Custard when:
- Making fruit flavors
- Working with delicate herbs or tea
- Flavor clarity is priority
- Serving as traditional gelato at –12°C
Next: Eggless Base →