A snowball is a cocktail containing advocaat and carbonated lemonade in approximately equal parts. It may have other ingredients, to taste.[1]
It typically contains a squeeze of fresh lime juice, which is shaken with the advocaat before pouring into a glass and topping up with lemonade.[2]
In the United Kingdom, it is often sold in both pubs and supermarkets in small bottles of approximately 113ml or 180ml (known in the pub trade as "splits") and is usually drunk as a "winter warmer", often at Christmas.