Japan temoura is a great and famous food in Singapore. You can find Japan tempura when you reached Singapore at the basement, Terminal 3, Changi Airport.
You can find top beancurd and tofu at Tanjong Pagar at the central of Singapore, the place you most probably will be touring.
29 Stanley St
Ingredients 1 large egg (cold 1 large egg = 40 ml)250 ml water (iced water, half bottle of bottled water )145g all purpose flour (1 cup = 240 ml = 120 g)
Mix egg and water. Then put in flour. Add in potatoes, seafood, and etc.
Fry the tempura and put on plate
Modified from: https://www.justonecookbook.com/shrimp-tempura/