Family Tested & Approved
Depends on how much you use!
Add egg yolks and lemon juice to a double boiler. With wire whisk, beat until well mixed. Place top of double boiler over bottom containing hot (not boiling) water.
Add a third of the butter to the egg yolk mixture and cook, beating constantly until butter is melted.
Add another third of butter, beating constantly. Repeat with remaining third, and beat until mixture thickens and is heated through.
Remove from heat and stir in salt.