
A double boiler, also known as a bain-marie, is a kitchen tool that consists of two stacked pots. The lower pot holds simmering water, while the upper pot holds the food or ingredients. This setup allows for gentle, even heating, making it ideal for delicate cooking tasks that require precise temperature control. Here are our four top uses for a double boiler and how it can enhance your cooking.
1. Melting Chocolate
Melting chocolate directly on the stovetop can be tricky, as it is prone to burning or seizing if overheated. A double boiler provides a gentle heat source, ensuring that the chocolate melts smoothly and evenly without burning.
Instructions
- Fill the lower pot of the double boiler with about an inch of water and bring it to a simmer.
- Place the chocolate in the upper pot.
- Stir the chocolate occasionally until it is completely melted and smooth.
- Remove the upper pot from the heat and use the melted chocolate as desired.

2. Making Custards and Sauces
Custards and sauces, such as hollandaise and béarnaise, require gentle heat to avoid curdling or splitting. The double boiler allows for controlled, even heating, making it easier to achieve the perfect consistency.
Instructions
- Bring the water in the lower pot to a simmer.
- Place the ingredients for the custard or sauce in the upper pot.
- Stir constantly, monitoring the temperature to ensure it stays within the desired range.
- Continue stirring until the custard or sauce thickens to the desired consistency.
3. Cooking Delicate Egg Dishes
Egg-based dishes like sabayon and lemon curd require precise temperature control to prevent the eggs from scrambling. The double boiler's gentle heat helps maintain the correct temperature, resulting in smooth, creamy dishes.
Instructions
- Simmer water in the lower pot.
- Whisk the egg mixture in the upper pot.
- Continue whisking over the simmering water until the mixture thickens and reaches the desired consistency.
- Remove from heat and serve immediately or use as directed in recipes.

4. Reheating Sauces and Foods
Reheating sauces and foods that are prone to drying out or splitting, such as cheese sauces and delicate soups, can be challenging. The double boiler allows for gentle reheating, preserving the texture and flavor of the food.
Instructions
- Bring the water in the lower pot to a simmer.
- Place the sauce or food in the upper pot.
- Stir occasionally until the food is heated through.
- Serve immediately.