Homemade Sweetened Condensed Milk

Ingredients List

• 4 cups (960 ml) Whole Milk – Use full-fat whole milk (3.25% to 4% milkfat) for optimal richness and natural emulsion.

• 1 ⅓ cups (266 grams) Granulated White Sugar – Provides essential sweetness and acts as a preserving agent while aiding syrup density.

• 3 tablespoons (42 grams) Unsalted Butter – Added near the finish to build a velvety texture and glossy sheen.

• ¼ teaspoon Fine Sea Salt – Balances the intense sweetness and enhances dairy depth.

• 1 teaspoon Pure Vanilla Extract (Optional) – Added after heat exposure to preserve floral aromatic notes.

Equipment Needed

• Wide, Heavy-Bottomed Saucepan or Dutch Oven (3-quart minimum): A broad surface area speeds up liquid evaporation, while a thick copper or tri-ply aluminum core base prevents hot spots that scorch milk solids.

• Heat-Resistant Silicone Spatula: Essential for continuously scraping the vessel base and corners to stop crystallization.

• Fine-Mesh Strainer: Guarantees a completely lump-free, silky consistency.

• Sterilized Glass Mason Jar: For air-tight, safe refrigeration storage.

Step-by-Step Preparation & Cooking Schedule

Step 1: Initial Dissolution Phase

• Time: 0:00 – 0:05 (5 minutes)

• Heat Intensity: Medium-High Heat ($350^\circ\text{F} / 175^\circ\text{C}$ burner setting)

• Action: Pour the whole milk, granulated sugar, and fine sea salt into your heavy-bottomed saucepan. Stir continuously with your silicone spatula while bringing the mixture to a gentle boil. Ensure all sugar crystals completely dissolve off the bottom of the pan before the milk reaches full boiling temperature to prevent grainy scorching.

Step 2: Active Reduction Phase

• Time: 0:05 – 0:35 (30 minutes)

• Heat Intensity: Low to Medium-Low Heat ($200^\circ\text{F} – 225^\circ\text{F} / 93^\circ\text{C} – 107^\circ\text{C}$ burner setting)

• Action: Once the milk begins to foam and bubble at the surface, immediately drop the stove intensity to low. Maintain a constant gentle simmer—small bubbles rising around the perimeter without aggressive boiling.

• Critical Technique: Do not stir continuously during this phase, as stirring incorporates unwanted air and encourages sugar crystallization along the pan walls. Instead, gently run your spatula across the bottom of the pan every 3 to 4 minutes to prevent milk solids from catching. Skim off any light foam that floats to the surface using a spoon.

Step 3: Final Thickening & Finish Phase

• Time: 0:35 – 0:40 (5 minutes)

• Heat Intensity: Off / Residual Heat

• Action: Observe the mixture. When it has reduced in volume by roughly 60% (yielding around 1 ½ cups total) and has turned a warm, light creamy-amber color, remove the pan from heat. Instantly add the unsalted butter and optional vanilla extract. Stir briskly until the butter completely melts and emulsifies into the hot liquid.

Step 4: Straining & Cooling Phase

• Time: 0:40 – 1:45 (1 hour 5 minutes)

• Heat Intensity: Room Temperature Cooling

• Action: Pour the hot liquid through a fine-mesh strainer directly into a clean glass jar to catch any stray milk skin. Leave the jar open at room temperature for 45 to 60 minutes. The condensed milk will continue to thicken significantly as its temperature drops, transforming from a warm syrup into a thick, pourable velvet cream.

Pro-Tips for Culinary Success

1. Avoid Scrape-Back Crystallization: As the liquid evaporates, sugar ring marks will form along the inner sides of your pan. Do not scrape these hardened sugar crusts back into the liquid, or your condensed milk will develop a grainy texture.

2. Speeding Up the Process: If short on time, substitute 1 cup of evaporated milk combined with 1 ¼ cups of sugar and simmer on medium-low heat for 10 minutes, though starting from fresh whole milk yields superior caramelized flavor.

3. Dairy-Free Alternative: Replace whole milk with full-fat canned coconut milk (standard unsweetened) in a 1:1 ratio. Simmer on low heat with sugar for 30 minutes for a luscious vegan condensed milk.

Comprehensive Nutritional Profile

Serving Size: 2 Tablespoons (30 ml / 1 fl oz)

Servings Per Recipe: 12 Servings