Rachael gives a classic egg cream soda a caffeinated and decadent twist with coffee liqueur + coffee ice cream. Try John's Boozy Coffee Egg Cream Cocktail here and get more delish coffee drink ideas here.
Combine half-and half, Kahlua, vodka and vanilla syrup, and blend with a spoon until completely smooth.
Divide between two chilled glasses and fill them about 3/4 of the way full. Top each off with seltzer water and stir to combine. To serve, hang a cold scoop of ice cream off the side of each glass.