Guinness is food. I brew my own with malt extract and steeping grains. Haven't done it in awhile. I usually make Catherine the Great's favorite breakfast beer, Russian Imperial Stout.
I've made a couple weird ones. George Washington small beer recipe from his diary, 2%, made with molasses and lotsa hops instead of grains. Super bitter. They only drank beer back then cause the water made you sick, who knew you should keep your sewer away from your drinking water?
Have a old recipe I want to try someday, Cock Ale; "parboil the cock, flay him, and stamp him in a stone mortar till his bones are broken (you must craw and gut him when you flay him)" put it in a sack and add it to your fermenting beer. Was popular in 17-18th century England. Lol!
My brother makes the blueberry beer with blueberries and ridiculous amounts of hops. Expensive to make, but comes out at 24 proof!