Cooking Jain is not a matter of leaving things out of an ordinary recipe. Take onion and garlic out of a North Indian gravy and what remains is thin. Jain kitchens solve this differently — asafoetida in the tempering, tomato and curd for body, sesame and peanut for richness, and besan-based dishes that never wanted onion in the first place.
This week draws mostly on Gujarati and Rajasthani cooking for that reason: dal-bhaat, kadhi-khichdi, thepla, dhokla, handvo, muthiya, gatte and sev-tameta are all naturally onion-free. Where a dish normally needs potato, raw banana takes its place with almost no difference on the plate.
No potato, sweet potato, carrot, beetroot, radish, fresh ginger, onion or garlic appears anywhere in the grocery list. Quantities are for a family of four.