Hot Lemon Or Lime Sauce

Let's Cook

1. Step 1.

   Combine in a small heavy saucepan: ⅔ cup sugar; Grated zest of 1 lemon or lime; ¼ cup strained lemon or lime juice; 2 tablespoons water

2. Step 2.

   Whisk in until thoroughly blended: 3 large egg yolks

3. Step 3.

   Add: 1 stick (4 ounces) unsalted butter, cut into pieces

4. Step 4.

   Set over low heat. Stirring constantly but gently, bring to a simmer and cook until thickened, about 1 minute. Strain through a fine-mesh sieve. Serve at once, or let cool, then cover and refrigerate for up to 3 days. Reheat over low heat, stirring.