Izzio to go national, with gluten: Founder of Udi’s fills a niche that’s kneaded

LOUISVILLE — With the sale three years ago of nationally known Udi’s brand and the gluten-free part of the company to Boulder Brands, the sellers the bread makers and business people of the company newly named U Baron Group are back to square one: filling the need for handmade breads made with old-world techniques. The plan is to go national again, but this time take the gluten along for the ride.

It’s a different-looking square one than it was nearly 20 years ago when Etai Baron set up a catering business here but found he couldn’t buy…