MixStirs Cafe 417 Beaver St, Sewickley, PA15143 MixStirs Cafe is a chain of smoothie shops, with franchises located throughout the United States. Its menu features a…More selection of protein, fruit, classic, dessert, booster and vitamin smoothies. Favorites include Oreo Madness, Blue Thriller, Say It Ain't Soy, Peanut Butter Blast, Chocolate Nirvana, Coffee Utopia, Marvelous Mango, Skinny Squeeze, Coldkicker and the "Immune," "Protein," and "Nutrient" Power Boosts. The cafe also features Acai bowls and juices. The Sewickley location offers sandwiches, wraps, paninis, breakfast selections and soups.