Fill a medium saucepan with 1 to 2 inches of water and bring to a simmer over high heat. Reduce the heat to low to maintain a bare simmer.
Place the sugar, lemon juice and egg yolks in a large heatproof bowl and whisk to combine. Set the bowl over, but not touching, the simmering water and whisk constantly until the yolks thicken, 4 to 5 minutes.
Remove the bowl from the saucepan; whisk in the butter one piece at a time, waiting until each piece is completely melted and incorporated before adding another.
Set a fine-mesh strainer over a medium bowl. Strain the curd, pressing on the solids and scraping the extra curd clinging to the underside of the strainer into the bowl; discard the solids left in the strainer. Press a sheet of plastic wrap directly onto the surface of the curd to prevent a skin from forming.
Refrigerate until set and chilled, at least 3 hours. (The curd can be made ahead and refrigerated up to 5 days.)
This recipe would go great as a drizzle over french toast, oatmeal cookies, scones or even ice cream.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Churro Co., Austin, TX