The best thing to mix with Baileys depends on your preferences and the occasion. If you're looking for a classic cocktail, an Irish Coffee is a great choice. Simply combine one part Baileys with one part strong black coffee and top it off with whipped cream. For a refreshing summer drink, try mixing Baileys with lemonade and crushed ice. This combination creates a light, sweet beverage that is perfect for sipping on warm days. If you're in the mood for something a bit more indulgent, try combining Baileys with chocolate milk or hot cocoa for an after dinner treat.