Select sauté on the instant pot and adjust to normal.
Add oil to the pot.
When the oil is hot add asafoetida.
Add dried whole red chili peppers, and cumin seeds.
When the cumin seeds splutter add the grated radishes, bell peppers, and walnuts to the pot.
Stir and add red chili powder and water.
Add fennel, ginger, and salt. Stir.
Let the radish cook until the water gets absorbed and is completely dry. Keep stirring in order to avoid the radish from sticking to the bottom of the pot.
Press cancel when the radish is completely dry.
Transfer the cooked radish in a serving bowl immediately.