SHU on a hot sauce label: check what was measured

Read the wording beside the number

A clearly described result for the finished product is particularly useful, especially when the maker explains the measurement method. Laboratory analysis of capsaicinoids can establish an SHU rating for a particular sample. A large number on the front does not, by itself, establish that the sauce was tested.

If the wording says “peppers rated up to 1,000,000 SHU,” it describes an ingredient. Check its proportion and the rest of the recipe, but avoid calculating an exact sauce rating from the ingredient list alone. You still lack a measurement of the finished product.

Five flames can help within one range

A 1–10 scale, flame symbols or words such as mild and hot can help you navigate a brand’s range. Start with a sauce you already know and see where the maker places it relative to the others.

That reference may not carry over when you change brands. Hot on one label need not mean the same as hot on another. Without comparable SHU information, the intended use and the maker’s serving guidance are more useful than trying to convert flames into numbers.

A range needs an explanation too

A heat range might describe variation in peppers, results from product batches or an approximate assessment. The words “10,000–20,000 SHU” alone do not tell you which applies.

Look for details on the manufacturer’s website. If none are available, treat the range as approximate and recognize what remains uncertain. A precise ranking of two sauces is not useful when the underlying figures describe different things.

Extract tells you something about the recipe

Terms such as pepper extract, capsaicin extract and oleoresin capsicum indicate an extract. Read the declared heat and usage instructions carefully, particularly for concentrated products.

The presence of extract alone does not tell you whether a sauce tastes good or how quickly its burn will develop. Its absence does not guarantee mildness either: a sauce made with very hot peppers can be extremely hot. Judge the particular recipe instead of classifying every bottle by a single ingredient.

Four questions before you buy

Once you have two bottles in mind, use a short checklist. An unanswered question is useful too: it shows how much is actually known about the product.

Keep the intended use in mind: sandwiches, a marinade or seasoning a whole pot. That helps you decide which details matter for your choice.

• Does the SHU number describe the sauce, a pepper or an extract?
• Is it presented as a measurement, a range or an estimate?
• How does the maker recommend using the sauce?
• Do you know a sauce with a similar, comparably described rating?

Sources

1. Measuring Chile Pepper Heat — New Mexico State University
2. National Chilli Awards — Category Guide — Clifton Chilli Club

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