Combine half-and-half, sweetened condensed milk, and vanilla extract together in a container with a lid; cover container and shake vigorously until creamer is smooth.
Wash hands and container thoroughly with soap and warm water before you begin. Additionally, you can sterilize the empty, wet container by microwaving it. Microwave a plastic container for 2 minutes on High or a glass container for 45 seconds on High (remember that metal lids cannot be sterilized in the microwave).
Whole milk can be used in place of half-and-half.
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