Tonja was born in the 1940's and this is her cousin Toni's boyfriend's grandmother's eggnog, so I'm guessing this is from the mid-1800's and probably dates much earlier. The original recipe called for half milk and half cream, but I use half and half. Delicious and simple, but be warned, Granny apparently liked a kick! I've made it from scratch and with the modern equivalents and it's fantastic either way. Do yourself a favor and use a mixer for everything. Those who like eggnog LOVE this recipe. I never leave a party with leftovers.