Drink it all IN. That's right, chug.
Drinking is like eating but with a lack of solids.
beverages ★★★★☆ 飲 (drink) + 物 (animal / thing) = 飲み物 (beverages )
heavy drinker ★★☆☆☆ 酒 (liquor) + 飲 (drink) = 酒飲み (heavy drinker)
a person who likes to drink booze