An egg cream is a classic New York City beverage made with SYRUP, seltzer, and soda water. The ingredients for an egg cream are SYRUP (5 letters), seltzer (7 letters), and sodawater (9 letters). SYRUP is usually chocolate, but can also be flavored with vanilla or other flavors. Seltzer is carbonated water, and soda water is a type of carbonated water that contains sodium bicarbonate. All three ingredients are combined to create the classic egg cream beverage.