Making Traditional Dulce de Leche
The transformation of white milk into amber silk relies on the Maillard reaction. By maintaining a steady, low simmer, you encourage the sugars and proteins to brown, deepening both the color and the concentration of the final sauce.
Watch the bubbles, not the clock.
Use a heavy-duty stainless steel pot to ensure even heat distribution. Avoid non-stick surfaces, as you need to scrape the sides consistently to prevent burnt crusts from falling back into the batch.
- Heavy-bottomed stainless steel saucepan
- Silicone spatula
- Whisk
What goes in.
- 1 quartwhole milk
- 1 cupgranulated white sugar
- 1/4 tspbaking soda
- 1 tspvanilla extract
Managing the Simmer
Keep the heat at a level that maintains tiny, lazy bubbles. If the milk begins to boil vigorously, the texture will turn grainy.
The method.
Dissolve the sugar
Combine the milk and sugar in your pot over medium heat. Whisk until the sugar has fully dissolved and the milk begins to steam.
Add the leavening
Stir in the baking soda. The milk will bubble up momentarily; this reacts with the acid in the milk to speed up the browning process.
Maintain the simmer
Lower the heat to medium-low. Let it cook undisturbed for the first 30 minutes. Once it begins to turn a pale straw color, start scraping the sides of the pot with your spatula every 10 minutes.
Reach the target
The sauce is ready when it reaches the color of a polished penny and coats the back of a spoon thickly. Remove from heat immediately.
Finish and cool
Stir in the vanilla. Transfer to a glass jar; it will continue to thicken significantly as it cools to room temperature.
Other turns to take.
Coffee Infused
Add two teaspoons of high-quality instant espresso powder when you add the sugar to create a mocha-forward spread.
Salted Dulce
Stir in a generous pinch of flaky sea salt after removing the pot from the heat to balance the sweetness.
When it doesn't go to plan.
If you see small lumps, pass the finished sauce through a fine-mesh sieve while it is still hot.
Do not scrape the very bottom of the pot if you accidentally get a dark, burnt spot; leave that layer undisturbed to avoid an acrid taste.
Store in a sealed glass jar in the refrigerator for up to three weeks.
The ones that keep coming up.
Why use baking soda?
It raises the pH of the milk, which encourages the Maillard reaction to occur more rapidly and helps produce that characteristic deep color.
Can I use low-fat milk?
Stick to whole milk. The fat content provides the necessary mouthfeel and richness that prevents the sauce from becoming thin or watery.
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