I walked all over the damn store looking for butter

The real butter is in the case with the Kerrygold. American Butter (I see Clover, Land o' Lakes, and Challenge, for example) is typically sold in one-pound boxes of four 8-tablespoon sticks. About ½ kilo in all.

Kerrygold, being more expensive because imported from Ireland, is usually sold as one 8-ounce slab, the equivalent of two sticks.

What you see in the tubs is either margarine, a mix of butter+oil, or whipped butter (adding air to make it softer , go farther, and seem like more).

Beer. Butter. Battlestar Galactica.

Those large vats are just margarine, so much cheaper than butter.

Ahh yes, beer and butter, classic pairing

i once visited a cocktail bar named "buttershaker" in germany, obviously butter is an important ingredient for numerous cocktails too ;-)