In top of double boiler beat egg yolks and milk, add sugar and salt. Cook stirring constantly over hot NOT boiling water until thick enough to coat a metal spoon. Let cool. Add cream and vanilla. Freeze by putting in the container of the ice cream maker and using the following amount of ice and salt
If you are using the old fashioned ice cream maker you would use 8 parts ice to 1 part rock salt. This makes 1 1/2 quarts.