R.I. Gen. Laws § 3-5-12

Only beverages which have been legally manufactured and on which all taxes and charges, federal and state, have been paid, shall be kept for sale or sold by a licensee. Holders of Class B, C, D, I and J licenses shall not have on the licensed premises distilled or vinous beverages in the containers, nor bottles, flasks or containers of less capacity than twenty-three ounces (23 oz.). Holders of Class B wholesaler’s licenses, Class G retailer’s licenses, Class B-H retailer’s licenses and Class A retailer’s licenses are authorized to keep for sale and to sell distilled beverages in containers of a minimum capacity of fifty milliliters (50 mls.) or one and seven tenths ounces (1.7 oz.).