If you are looking for somewhere to sit down and get a hot meal, fast and for under 150 Baht a person, Ya-Yoi Japanese restaurant and Hachiban Ramen 8 are some of the best bets. Both are chain restaurants that have numerous locations throughout Bangkok and can easily be found in most shopping centers or malls.
Hachiban Ramen 8 is easy to spot with its distinctive red number 8 and yellow sign. They have a wide selection of yummy noodles swimming in a rich broth with your choice of pork, duck, or fish cake. Most Ramen bowls are under 80 Baht. They have a good choice of ramen bowls that range in price from 45 Baht to 85 Baht and they also have friend rice. A must try is the dipping ramen with stewed duck and hot sauce for 79 Baht and an order of either the fried dumplings or steamed pork & shrimp dumplings for 45 baht a serving.
Ya Yoi, which is a subsidiary of the ever popular MK restaurant chain and is a favorite cheap, eat for students and families. The best thing about Ya-Yoi is the portion size and there are few places in Bangkok where you can sit down in an air conditioned mall, and have a meal so inexpensively outside of a food court. All set meals come with a bowl of steamed white rice, miso soup, a garden green salad and kimchi. Good choices include the deep fried pork-cheese burger for 119 Baht or the Chicken Teriyaki for 109 Baht. The prawn, fish and vegetable tempura for 99 Baht is crispy and delicious and at 55 Baht each the seaweed salad or buttered enoki mushrooms are excellent starters. The 8 piece California roll set can be had for 109 Baht and can either be a starter or a meal. They also have a nice selection of somen and ramen noodle dishes that range in price from 79-110 Baht per serving, and the bowls are large enough that you can share it between two people or make one bowl and entire meal. It is also important to note that Ya Yoi does not include a service charge on the ticket, so it is recommended that you leave a tip in the tip jar when you pay at the counter.