Zeppy's Onion Bagels - 6. Since 1925. Pre-sliced. No cholesterol. "History in the baking". Zeppy's onion bagels are made for onion lovers! Bits of toasted onions swirl their distinctive sweet flavor throughout these savory bagels. Since 1925 Zeppy's bagels have been baked fresh daily in New England. We use old fashioned methods to produce an authentic bagel that, when toasted, is crispy on the outside and soft and chewy on the inside. We hope you enjoy our efforts.