that is rad! honestly... fill it slowly with an oxyclean solution, let it sit for a day, dump it out, refill it with hot water once or twice and dump it out and you should be good! only issue is... i'd fill it with something uncarbonated. because you wont know if it can handle the carbonation... so mead. apfle...howeveryouspellit. wine. etc.
cool find though!
RAINYDAY BREWING AND WINERY Sherwood, OR - EST 2010
Coming up Whiskey Oak Aged Imperial Rye Stout
Primary Sour saison - Lambic inspired coolshipped + dreg beer - Nut Brown
Kegged Nelson, Kohatu, Citra IPA
240v - 4500w electric two tier