Last week, a chef who has cooked at Michelin-rated restaurants and his partner opened Washington County’s only authentic French cafe and bakery. La Laiterie, a French-inspired cafe owned by chef Ross Florance and his partner McKenna Koledo, debuted on April 23 in a historic Route 1 building in Jonesboro. The cafe offers homemade breads, pastries and classic French dishes — from almond croissants, pain au chocolates and kouign-amanns, which is a …