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The container decides the serving

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The rule in one sentence Which means the jar is a labeling decision And the reference amount is not yours either So two adjacent sizes behave differently Which is why this property leads with the arithmetic There is a middle band as well Three bands, and the container picks And for a dosed product that is not a formality What this property can and cannot answer That gap has its own page References

A 2 oz bottle is 59 mL and the line is 60. Nothing about the syrup changed.

The rule in one sentence

A product packaged and sold individually that holds less than 200 percent of the applicable reference amount must be considered a single-serving container, and the entire content must be labeled as one serving.

Which means the jar is a labeling decision

Not a volume decision with a labeling consequence somewhere downstream. The size you pick determines what the label may declare, directly.

And the reference amount is not yours either

It comes from a table. Syrups are 30 mL for all syrups, so 200 percent is 60 mL, and a 2 oz bottle at 59 mL sits under the line.

So two adjacent sizes behave differently

The 2 oz bottle is a single-serving container and the whole thing is one serving. The 4 oz bottle at 118 mL is nearly four reference amounts and declares servings normally.

Which is why this property leads with the arithmetic

Most packaging decisions are about fit, chemistry or shelf appeal. This one is about a threshold, and you can be on the wrong side of it by one millilitre.

There is a middle band as well

A product holding 200 to 300 percent of the reference amount requires dual-column labeling. Between 150 and 200 percent the dual column is permitted and voluntary.

Three bands, and the container picks

Under 200 percent, the whole package is one serving. 200 to 300 percent, two columns. Over 300 percent, ordinary per-serving labeling.

And for a dosed product that is not a formality

A label that declares the entire container as one serving is making a statement about the whole contents at once. That is a different communication from a per-piece declaration.

What this property can and cannot answer

It can answer the liquid leaves, because our capacity field is in millilitres and so are those reference amounts. It cannot answer gummies, chocolate or baked goods, whose reference amounts are in grams.

That gap has its own page

Because it is a real limit on what a volume-based catalog can tell a buyer, and it should be stated rather than worked around.

References

21 CFR 101.9(b)(6): "A product that is packaged and sold individually that contains less than 200 percent of the applicable reference amount must be considered to be a single-serving container, and the entire content of the product must be labeled as one serving." The same paragraph permits voluntary dual-column labeling for a product holding 150 to 200 percent of the reference amount. law.cornell.edu

21 CFR 101.12(b), Reference Amounts Customarily Consumed Per Eating Occasion. The amounts that reach this shelf: hard candies and breath mints 2 g; all other candies 30 g; cookies 30 g; brownies 40 g; syrups "30 mL for all syrups"; honey, jams, jellies, fruit butter, molasses, fruit pastes and fruit chutneys 1 tbsp; carbonated and noncarbonated beverages, wine coolers and water 360 mL. law.cornell.edu

Our capacity field is in millilitres, measured on 19 October 2026 for all 97 containers in this group. Four of the reference amounts above are expressed in grams: hard candies 2 g, all other candies 30 g, cookies 30 g, brownies 40 g. We publish volume and the rule asks for mass, so for gummies, chocolate and baked goods our data cannot establish which band a jar falls in. The liquid leaves can be answered from it.

Written from 21 CFR 101.9 and 101.12 and from the catalog as it stood on 19 October 2026. The serving-size rules quoted here are the federal food-labeling rules; dose caps, potency labeling, child-resistant packaging and exit packaging for a licensed cannabis edible are set state by state and nothing here describes them. Four of the reference amounts that matter on this shelf are expressed in grams and our capacity field is in millilitres, so for gummies, chocolate and baked goods our data cannot tell you which band a jar falls in.