Understanding the Heat Level of Frank's Red Hot Sauce
Frank's Red Hot sauce sits at roughly 450 Scoville Heat Units. That number comes from the capsaicin concentration in the cayenne peppers used as the primary ingredient. For context, a standard jalapeño ranges from 2,500 to 8,000 SHU. This means Frank's is significantly milder than most peppers people associate with real heat. The sauce tastes more vinegary and tangy than aggressively spicy, which is why it became the foundation for buffalo wings rather than a standalone hot sauce for heat-seekers. Wilbur Scoville developed his organoleptic test in 1912 to measure pungency. He would dilute pepper extract in sugar water until a panel of tasters could no longer detect any heat. The degree of dilution determined the Scoville rating. Modern labs now use high-performance liquid chromatography to measure capsaicinoid content directly, converting the results into SHU values. Frank's Red Hot measures around 450 SHU by either method. The brand has maintained this consistent level since its 1920 launch in New Orleans, and the recipe hasn't changed enough to meaningfully shift that number. I once tried substituting Frank's for a hotter sauce in a recipe that called for something in the 2,000 to 3,000 SHU range, expecting the heat to build when reduced. It didn't. The vinegar and tomato base concentrated, but the capsaicin level per volume stayed the same, and the final dish was noticeably under-spiced. The fix was simple: I added a small amount of cayenne powder directly to the pan during cooking. Even a quarter teaspoon adjusted the heat profile without throwing off the flavor balance, since the cayenne matches the primary pepper already in the sauce.
One thing most people get wrong about Scoville ratings is assuming they translate directly to how hot a finished dish will taste. They don't. The 450 SHU reading applies to the bottled sauce before any cooking or dilution. When you mix Frank's with butter for buffalo wings, you're diluting the capsaicin. A typical 2:1 butter-to-sauce ratio brings the effective heat down to maybe 150 to 200 SHU in the final toss. That's closer to a bell pepper than a jalapeño. This is also why restaurant buffalo wings taste different from homemade versions — many places use a higher sauce-to-butter ratio or add a secondary hot element like cayenne or garlic-infused oil to push the perceived heat higher than the raw numbers suggest. There's also a practical issue with relying solely on Scoville ratings when comparing products within a single brand line. Frank's currently produces several varieties beyond the original — Mango Hot, Habanero, and others. Those variants sit much higher on the scale, with the Habanero version reaching roughly 5,000 to 8,000 SHU depending on the batch. The original remains consistently around 450, but if you're formulating a recipe and swap one variant for another without adjusting other ingredients, you'll end up with a product that's either too mild or uncomfortably hot. I've seen home cooks make this mistake repeatedly when following recipes online that don't specify which Frank's product they mean. If your goal is actual heat rather than just the tangy flavor profile Frank's provides, you're better off using something like Cholula (around 1,000 SHU) or a dedicated hot sauce in the 2,000 to 5,000 SHU range as your base and adding Frank's only for its distinctive taste. The Scoville number alone won't tell you whether a sauce will work for your intended application, but understanding how dilution, cooking, and ingredient interaction affect the final heat level will save you from a lukewarm result every time.
