Mary's Donuts & Coffee on Maine Avenue in Lakeside is the second storefront for a donut-and-deli recipe that originated at the brand's Santee location on Carlton Hills Blvd. The deli side of the menu produces full breakfast sandwiches, Reuben wraps, and roast beef-and-bacon tortilla rolls, giving Maine Avenue an all-day food anchor beside the dinner-oriented Eastbound Bar & Grill two blocks south. Signature items include the oversized apple fritter, the maple bacon bar, and the 8-Second Ride Wrap — roast beef, bacon, onion, sprouts, garlic aioli, and cheddar on a wheat tortilla. Donut and pastry platters in bulk serve the catering side of the operation, feeding group breakfasts and community gatherings, with standing accounts at Lakeside Community Center on Vine St and other East County meeting spaces. The pastry case anchors around the oversized apple fritter and a rotating lineup of raised, cake, and old-fashioned donut formats, while the deli counter runs a full Boar's Head-style sandwich build with sliced meats, cheeses, and house-made garlic aioli layered on fresh-baked rolls.