A tour of the modern protein aisle
The 24-item expansion that took Simple Truth Protein past 110 products reads like a tour of the modern protein aisle: a high-protein cereal with 14 grams per serving in cinnamon and berry, 100% grass-fed beef sticks at 9 grams, and protein-boosted frozen meals, beverages, chips and desserts — all positioned as “free from unwanted ingredients” and delivering between 9 and 21 grams of protein per serving.
Private label is no longer the value-only aisle
It’s a small headline on its own. But it sits on top of a much bigger shift. Private label is no longer the value-only corner of the store. Retailers are using their own brands to chase the two trends defining grocery right now — the protein-and-functional wave driven by GLP-1 medications, and the trade-down to store brands as shoppers hunt for value. Kroger’s Simple Truth is one of its largest private labels, and protein is now one of its fastest-growing wings. Walmart, meanwhile, is in the middle of repackaging nearly 10,000 Great Value products, and Aldi is putting its own name on virtually everything it sells.
Who actually makes these products
For the kosher world, the interesting part is who actually makes these products. Retailer brands are built almost entirely on co-manufacturer formulas — the store designs the label and the spec, and a network of contract manufacturers and ingredient suppliers builds the product. That makes private label one of the fastest-growing on-ramps for new OU certification. Retailers increasingly want a kosher symbol on their store brands as a point of differentiation and a way to reach more shoppers, which means the certification conversation often starts not with the brand on the package, but with the plant behind it.
The scale of kosher on the private-label shelf
Consider the scale. Kroger’s “Our Brands” private-label program spans more than 13,000 products and generates roughly $30 billion a year, made across 35 company-owned plants. Of those, OU Kosher reports it certifies about 5,400 Kroger store-brand products — and this is at the second-largest food retailer in the United States, the largest traditional supermarket operator, holding around 10% of the U.S. grocery market. Walmart tells the same story: OU Kosher certifies about 4,650 products across its private-label lines — Great Value, Marketside and the newer Bettergoods. The flagship Simple Truth brand alone — Kroger’s natural and organic line — is a $3 billion brand in its own right. In other words, the OU symbol already rides on thousands of items at one of the most important shelves in American retail. For a manufacturer or ingredient supplier, that is the practical case for certification: it’s not a niche credential, it’s a baseline expectation for getting onto major private-label programs.
Why it matters for OU-certified companies
As lines like Simple Truth Protein expand, the OU-certified contract manufacturers and ingredient houses supplying them — and the protein concentrates, cultures, and fortification blends inside these products — are exactly where supervision relationships get established or need to be confirmed. A protein cereal, a fortified beverage, and a cultured snack each pull different functional inputs onto a certified line, and each one is a moment to verify that kosher status carries cleanly from ingredient to finished SKU. If you co-pack or supply ingredients for retailer brands, the protein boom isn’t just a sales opportunity — it’s a steady stream of new certification questions worth getting ahead of.
Note on status: Select Simple Truth Organic items carry OU certification and should be confirmed on the label. Source: Progressive Grocer, Food Business News, Kroger Investor Relations.
