(318 Rama I Rd, Khwaeng Pathum Wan, Khet Pathum Wan)
Just when you thought you had nailed the 3 best ramens in Bangkok, Ramen Kio comes in and sweeps the rug from under your feet. First taste, hmmm... decent, second taste, better.. third taste AHHHHH.. This is not the usual fatty Tonkotsu that lines your mouth with glistening fat on the first sip and leaves you reaching for a toilet or bottle of liquor. This is the slow burn, the creeper. Just when you thought you understood its depths it opens up more and slaps you in the face. This is Tonkotsu without all the faffing around. The eggs are divine, could not be better. The pork was sublime, tender as hell and melted before you even applied pressure. The noodles (medium or thin option) were solid, and the broth itself was a gift that kept giving.
By far better than every single ramen place in Bangkok, except Bankara... but its a close battle. They are definitely the 2 best places in Bangkok as of now.