Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make homemade vanilla custard without an ice cream maker [title] Mix 12 ounces (1.5 cups) of heavy whipping cream with 12 ounces (1.5 cups) of milk of choice. [step] Any milk will work, but whole milk is recommended for optimal taste. Cook the mixture on medium heat and bring to a boil.

Ending1: [substeps] If you don't have cold milk, you can use milk, iced or cold water instead to make the custard. [title] Boil the mixture in a saucepan over medium-high heat. Ending2: [title] Cook the mixture at 375 degrees fahrenheit (190 degrees celsius) for 15 to 20 minutes. [step] Stir the mixture occasionally as it reaches a boil. Ending3: [title] Once the mixture has boiled, add seven egg yolks. [step] Lower the heat from medium to low heat. Ending4: [title] After the mixture simmers, skim off the pulp. [step] The foam will separate from the mixture; it won't have time to form into ice cream.

Answer format: ending1/ending2/ending3/ending4