Fans line up for Mikono, Chicago’s first Greek froyo shop, as it goes from pop-up to permanent in Pilsen

Back in January, best friends Nathalie Del Valle and Maya Matta got a big idea. The pair remembers the exact date they started talking about opening a Greek frozen yogurt shop: “January 5th,” Matta and Del Valle said in unison. Two days later, they had ordered their first test machine, a soft-serve ice cream maker, Matta said. Co-owners Maya Matta and Nathalie Del Valle stand in Mikono, a Greek frozen yogurt shop in Pilsen on the Southwest Side. Candace Dane…