40 Pa. Code § 13.53 - Bar spending/free drinks
Representatives of manufacturers and licensees may give or purchase an alcoholic beverage for consumers in retail licensed premises provided the giving of the alcoholic beverage is not contingent upon the purchase of any other alcoholic beverage and is limited to one standard-sized alcoholic beverage per patron in any offering. A standard-sized alcoholic beverage is 12 fluid ounces of a malt or brewed beverage, 4 fluid ounces of wine (including fortified wine) and 1 1/2 fluid ounces of liquor.
Notes
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