Hi Lisa. We actually do sell sauce by the gallon through our catering line 513.978.0141.
I work there. We sell packaged bottles of our sauce but you can also buy it in 2oz, 4oz, half pint, pint, or quart sizes. Sorry, no gallon, but you could just get 4 quarts.
They do sell their sauce by the 16 ounce bottles.
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