<human>:  What are some food pairings that contrast flavors?
<bot>: Some food pairings that contrast flavors include: sweet and sour (such as pineapple and pork or mango and roasted veg), salty and sweet (such as pretzels and peanut butter or chips and salsa), and bitter and spicy (such as dark chocolate and chili peppers or green tea and ginger).