Beat a path through the hungry taco fans at Fonda (Windsor edition) to the staircase at the back. At the top you’ll find Atico: a bright, breezy bar that puts the chilli on this crazily busy eatery’s enchilada. A lot of punters wind up getting corralled in here for pre-dinner Pacifico beers, but it works as a stand-alone bar. You’re looking down the barrel of a whole lot of fruit-driven drinks in jars that wouldn’t look out of place on a beach. A Spanked Basil Gin Smash is a tall glass of citrusy freshness. Go for a Mexicano of tequila, red vermouth and Campari served straight if you’re after something a little more red blooded. They also do a roaring trade in grapefruit, tequila and Aperol slushies if you really want to channel Cancun. The space is set up for leaning and lounging. There’s a scattering of low, candlelit tables and the room is bordered by benches stacked with bright cushions. If it gets busy, drag some down and make a nest on the floor. Hit the deck if you like late afternoon sun or smoking. The menu is just meant as a warm-up for downstairs, but you could always order up some guacamole, rock ling croquettes and dishes of fried potatoes with spicy aioli and build yourself a little Mexi-tapas meal.