In our series, Place at the Table , we look at diasporic enclaves around the world through their cuisines—and the people who, in trying to recreate a taste of home, have forged exciting food scenes that invite others in. Philadelphia’s Rittenhouse Square is home to landmarks like a 17th-century park and the Curtis Institute of Music. It’s also home to Tequilas Casa Mexicana , a 40-year-old family-run restaurant known for contemporary Mexican cuisine and ethically sourced agave spirits served atop white tablecloths. The space itself transports diners to Guadalajara , where the operating family hails from: There are floral green and white floor tiles, handmade plateware made by their cousins back at Ceramica Suro , and a mini water fountain depicting El Santo Niño de Atocha. Many would argue, it's also responsible for the renaissance sweeping through this city’s Mexican food scene. David Suro Piñera, owner/founder of Tequilas and La Jefa Clay Williams Tequilas owner David Suro Piñera has been at the forefront.…