The miniature
On this page8
They are full products
50 mL and 100 mL are on the list of authorized standards of fill. A miniature is not a sample exempt from the rules; it is a bottle of spirits with every obligation a large one has.
Which is the whole difficulty
Brand name, class and type and alcohol content in one field of vision, plus the Government Warning at a legible size, plus name and address and net contents, on a bottle a few inches tall.
The type size relief is real but small
At 237 mL or less the warning minimum drops to 1 mm. That is the smallest the regulation ever allows, and it comes with a character density limit of 40 per inch, so the text cannot simply be condensed to fit.
What they are for
Sampling, gift sets, airline and hotel service, and in some markets single-serve retail. For a new distillery the sampling use is the one that pays, because it gets the product into hands that would not buy a full bottle.
The economics are not a smaller version
Cost per millilitre is far higher: the same closure, the same label printing setup, the same filling line time and a fraction of the volume. Pricing a miniature as a twentieth of a 1 L bottle loses money on every one.
What the catalog holds
8 containers at 50 mL and 19 at 100 mL. These are sizes a general packaging catalog genuinely carries, because they overlap with sample and travel formats from other categories.
And bitters live here too
Alcoholic bitters sit in the same small window, 30 to 120 mL, and they are the one product in this craft a very small producer can realistically start with.