Mainstream Bar and Grill offers a menu of classic American bar food in a casual environment. Selections include chicken wings, home-fried chip baskets, build-your-own burgers, shrimp skewer baskets and desserts that rotate seasonally. The restaurant regularly hosts live music and other special events. Mainstream Bar and Grill also offers party bus services for groups of up to 20 people that begin anywhere in Waukesha and end at the restaurant. Daily specials and upcoming events are listed on its website.