Brothers Guillaume and Romain Luyat take pride in the fact that their favorite treat, the eclair, is so popular in their home town of Lyon, where their shop Les Eclaireurs resides. “Lyon is known for several different products, most notably pink praline,” says Guillaume. “So it’s logical that we would create the praline eclair.” This flavor is one of the brothers’ signature confections, with a cream filling made with the candy coated almonds. The praline eclair is just one of the brothers’ 30 sweet eclair recipes, which include flavors like classic chocolate, vanilla, as well a...