The stalls around Lorong 9 (and possibly other areas) boasts several food outlets that are opened 24 hours of the day, so one can pretty much drop by the area at any time of the day or night.
Lion City Frog Porridge (235 Geylang Road) is famed for, obviously, frog porridge ($19 for 2 frogs and a pot of porridge). Incidentally, there is also another one at Balestier which also calls itself the frog porridge vendor from Geylang Lorong 9. So which is the original? The taste between the 2 stalls for me were quite comparable, but if my memory didn't not fail me, the one at Balestier has a stronger kick from the spiciness of the kung pao gravy which is also served in much more generous portions. It also came bubbling hot which this one in Geylang didn't. The frog was the usual hot and tender succulent flesh that one can simply place in the mouth and suck the meat off the bones. The porridge here has shreds of ginger which along with coriander forms the bane of my eating experiences. Apart from that, the thick gruel which is the usual accompliment with the claypot kung pao frogs was an almost unparalleled definition of literal and proverbial warm comfort, especially in the cool rainy nights. Really, apart from the ginger shreds, I have no complains.
Just across the road sits a famous Lorong 9 Geylang beef kuey teow. This was actually my first time having it and I really didn't know what's so great about it. It's not a bad beef kuey teow. The lethal combination of black bean and chilli sauce is something that I normally find quite irresistible. There was definitely a char flavor that is distinctive to the food cooked from seasoned black iron woks. However, the sauce isn't as flavorful as I thought it might have and the beef was simply just tender pieces of unidentifiable meat. Insert your own rat jokes here. Maybe it's just a personal preference for my beef to taste like beef. I really don't think that much of this supposedly famous place.