For those who suffer from gluten intolerance or celiac disease, Cathy Berzins and her Birch Tree Café in Clarksville are addressing a need with a 100-percent gluten-free eatery and bake shop. “I’ve had people hug me, crying when they leave, saying they hadn’t had a sandwich in four years,” Berzins says. Birch Tree specializes in artisanal gluten-free breads, baked goods like muffins, cupcakes and pies, gluten-free lunch and takeout goodies, including sandwiches, pizzas and quiches. “Nothing can replicate that elastic gluten quality,” Berzins says. “We have to mimic and create blends that, by way of chemistry, give us the results that we want.” This fall, she hopes to begin shipping her bread nationwide. Look for it.