1.In a medium bowl, combine kecap manis, sambal oelek, ginger and garlic. Add tofu, tossing to coat. Marinate 15 minutes.
2.Drain tofu, reserving the marinade. Toss tofu in cornflour, shaking off excess.
3.Heat oil in wok over a high heat. Stir-fry tofu in batches for 2-3 minutes, until golden and crisp. Remove from wok.
4.Stir-fry peas and asparagus in same wok for 2-3 minutes, until tender crisp. Add reserved marinade, peanut butter and juice. Stir-fry 1-2 minutes, until heated through. Serve vegetables topped with tofu.
Kecap manis is a sweet soy sauce. Sambal oelek is crushed chilli. Both are available in the Asian aisle of supermarkets.