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1
Bring the milk and vanilla bean to a simmer in a heavy-bottomed medium saucepan over medium-low heat.
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2
Cover and let stand 30 minutes.
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3
Remove the vanilla bean and, using the tip of a small knife, scrape the beans from the pod back into the milk.
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4
Rinse the vanilla bean and reserve for another use, if desired.
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5
Whisk together the sugar and egg yolks in a large bowl until the mixture is thick and pale.
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6
Gradually whisk in the warm milk then pour into the saucepan.
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7
Cook over low heat, stirring constantly with a wooden spoon, until the mixture coats the spoon (an instant-read thermometer will read 185F/85C).
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8
Do not boil.
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9
Strain through a wire sieve into a bowl.
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10
Cool completely, stirring often.
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11
Cover and refrigerate at least 2 hours, until thoroughly chilled.
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12
Whisk the cream into the cooled custard.
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13
Pour into the container of an ice cream machine.
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14
Freeze according to the manufacturer's instructions.
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15
Transfer to an airtight, freezerproof container and freeze for at least 2 hours.
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16
Scoop the frozen ice cream into bowls and serve.
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17
Variation: Coffee Ice Cream
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18
Omit the vanilla pod.
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19
Stir 2 tsp of instant coffee powder into the warm milk.
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20
Do not infuse.