Misleading title.

The best consumer products sell themselves with network effects of word-of-mouth. It can be very slow or very fast.

If you wanted to launch a new sauce, I would give difficult-to-open-completely bottles to restaurants in major cities and say "We're trialing a new sauce that's ready for market. And we'd like to trial it exclusively at your [appropriately trendy for demographic] restaurant in XYZ, WQ. Can we ship it to the restaurant's address?"