EVERY Tuesday, exchange your empty Unmapped Brewing Co. growler glass for a new pre-filled growler for only $7! No empty glass to exchange? No worries! First time Unmapped growler purchases are also $5 off: $7 for beer + $5 for the glass. *This deal only applies to Unmapped Brewing Co. glassware returns and/or first-time Unmapped Brewing Co. growler purchases. Prefill ...