The well is
the shelf under the bar where they keep liquor at hand for mixing drinks. So, a well brand or house brand is the brand of liquor served when a customer requests a drink by its
generic name (e.g.
gin and tonic, scotch and soda). It's usually the least expensive brand served, as opposed to more expensive call brands.
Order me
a Jack and
Coke. Their well brand tastes like
bathtub gin.
