Mastering Fruit Coulis Consistency
A coulis is all about the balance between intensity and flow. If it is too thin, it bleeds into your dessert; too thick, and it loses its elegance. Getting the viscosity right is a matter of knowing when to stop the reduction.
Understand the evaporation point
The coulis will thicken as it cools, so stop the heat while it still seems slightly looser than your target. Always keep a metal spoon chilled in the freezer to test the consistency as you go.
- small stainless steel saucepan
- fine-mesh sieve
- silicone spatula
- metal spoon
What goes in.
- 1 lbfresh or thawed frozen berries
- 2 tbspgranulated sugar
- 1 tspfresh lemon juice
Watching the coat
Dip the back of a chilled spoon into the simmering fruit. Run your finger through the liquid on the spoon; if the line stays clean and the sauce doesn't run back into the gap, it is ready.
The method.
Combine
Place the fruit, sugar, and lemon juice into the saucepan over medium-low heat. Stir until the fruit softens and releases its juices.
Simmer
Let the mixture simmer gently for 8 to 10 minutes. If the mixture looks too watery, increase the heat slightly for 2 minutes to encourage evaporation.
Strain
Pass the mixture through a fine-mesh sieve into a clean bowl. Use the back of a spatula to press firmly on the solids to extract all the liquid, leaving the seeds and skins behind.
Chill
Let the coulis reach room temperature, then refrigerate. It will firm up significantly once cold.
Other turns to take.
Herbal infusion
Steep a sprig of mint or basil in the hot coulis for three minutes before straining.
Spiced
Add a small strip of orange zest or a pinch of ground cardamom during the simmering stage.
When it doesn't go to plan.
If your coulis is too thick after cooling, whisk in half a teaspoon of water at a time until it reaches the desired flow.
For stone fruits like peaches, remove skins before simmering to ensure a smoother texture.
Do not over-boil; high heat can dull the bright color of the fruit.
The ones that keep coming up.
Can I use cornstarch to thicken it?
Avoid starches. They make the coulis cloudy and change the texture from a clean, bright sauce to a pasty one.
How long will this stay good?
Stored in an airtight jar, it will keep for up to five days in the refrigerator.
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