This is the start of a series of 221Bs. They'll be a mixture of genres, all standalone, and may dip into Johnlock eventually...
Bananas and Milk
John knew his flatmate was odd. A lot of the time it just washed over him – days of silence punctuated by bursts of shouting, the strange menagerie of insects caged in Sherlock's wardrobe that periodically escaped and scuttled through the kitchen in a mad dash for freedom, and of course the skull.
Sometimes Sherlock's oddness bloody infuriated him, what with his torture of the violin, his spoiling of every board game John had once loved playing and the too-frequent fires resulting in a whiff of smoke that lingered inside 221B no matter how long the windows were open.
Of course, most of the time Sherlock's bizarre way of life was exactly what John seemed to both need and want. The unexpected, the dangerous, the sheer brilliance lit up John's life in a way that surpassed even the throbbing rush that had accompanied him day and night while on duty in Afghanistan.
Yet, John decided, as he stopped in front of the kitchen, Sherlock's eating habits were the oddest thing about him. Days he would go without eating, and when he finally took food, what did he eat? Mashed banana swimming in milk, a mountain of peanut butter in the centre and – what was that in his hand, primed and ready to squeeze? Of course. What else? Only the tomato ketchup bottle.
A.N. Because tomato ketchup goes with everything...
Hope you enjoyed the start of this series! Feel free to give me any prompt words (especially 'B's!)