We like to use salted nuts in this classic ice cream.
Combine in a small saucepan and bring to a boil, stirring to dissolve the sugar:
Boil the syrup for 2 minutes. Meanwhile, beat in a double boiler top or medium heatproof bowl:
Slowly beat the hot sugar syrup into the egg yolks. Cook over simmering water, stirring constantly, until the mixture reaches 175°F and coats the back of a spoon. Do not allow the mixture to boil. Add and stir until melted:
Strain through a sieve into a medium bowl, then stir in:
Refrigerate the ice cream base until cold, overnight if possible, or quick-chill in an ice water bath.
Pour the base into an ice cream maker and freeze as directed. When the ice cream is almost frozen, add:
Transfer to a container with a tight-fitting lid and freeze for at least 4 hours to harden.