R.I. Gen. Laws § 3-9-8: Possession of impure or adulterated liquors as evidence of keeping for sale.

Having in possession, in a place of business or in any place, building, or dwelling where liquors are sold, of one gallon or upwards of impure or adulterated liquors is evidence that those impure or adulterated liquors are kept for sale by the person in whose possession those impure or adulterated liquors may be found.