Chuy's is a growing, full-service restaurant concept offering a distinct menu of authentic, freshly-prepared Mexican and Tex-Mex inspired food. We were founded in Austin, Texas in 1982. As of December 30, 2018, we operated 100 restaurants across 19 states, with an average annual unit volume of $4.3 million for our 81 comparable restaurants. Our restaurants have a common décor, but we believe each location is unique in format, offering an "unchained" look and feel, as expressed by our motto "If you've seen one Chuy's, you've seen one Chuy's!" We believe our restaurants have an upbeat, funky, eclectic, somewhat irreverent atmosphere while still maintaining a family-friendly environment. We are committed to providing value to our customers through offering generous portions of made-from-scratch, flavorful Mexican and Tex-Mex inspired dishes. We believe our employees are a cornerstone of our culture and set the tone for a fun, family-friendly atmosphere with attentive service. We believe the Chuy's culture is one of our most valuable assets, and we are committed to preserving and continually investing in our culture and our customers' restaurant experience.
Our core menu was established using recipes from family and friends of our founders, and has remained relatively unchanged over the years. We offer the same menu during lunch and dinner, which includes enchiladas, fajitas, rellenos, tacos, burritos, combination platters and daily specials, complemented by a variety of appetizers, soups and salads. Each of our restaurants also offers a variety of homemade sauces, including our signature Hatch Green Chile, Boom-Boom and Creamy Jalapeño sauces, all of which we make from scratch daily in each restaurant. These sauces are a key element of our offering and provide our customers with an added ability to customize their orders. Our menu offers considerable value to our customers, with our average check of $15.08 as of December 30, 2018, which we believe is on the lower end of our casual dining peer group. We also offer a full-service bar in all of our restaurants providing our customers a wide variety of beverage offerings, featuring a selection of specialty cocktails including our signature on-the-rocks margaritas made with fresh, hand-squeezed lime juice and the King's Punch, a made-to-order, hand-shaken rum cocktail served in our signature shaker. The bar represents an important aspect of our concept, where customers frequently gather prior to being seated. For the twelve months ended December 30, 2018, alcoholic beverages constituted 18.4% of our total restaurant sales.
We strive to create a unique and memorable customer experience at each of our locations. While the layout in each of our restaurants varies, we maintain distinguishable elements across our locations, including hand-carved, hand-painted wooden fish imported from Mexico, a variety of vibrant Mexican folk art, a "Nacho Car" that provides complimentary chips, salsa and chile con queso in the trunk of a classic car, vintage hubcaps hanging from the ceiling, colorful hand-made floor and wall tile and festive metal palm trees. Including patio space, our restaurants range in size from 5,300 to 12,200 square feet, with seating for approximately 200 to 400 customers. Nearly all of our restaurants feature outdoor patios. We design our restaurants to have flexible seating arrangements that allow us to cater to families and parties of all sizes. Our brand strategy of having an "unchained" look and feel allows our restaurants to establish their own identity and provides us with a flexible real estate model. Our site selection process is focused on conversions of existing restaurants as well as new ground-up prototypes in select locations. Our restaurants are open for lunch and dinner seven days a week. We serve approximately 5,400 customers per location per week or 280,000 customers per location per year, on average, by providing high-quality, freshly prepared food at a competitive price point. We believe that many of Chuy's frequent customers visit one of our restaurants multiple times per week.