Spicy Potato Curry

Okay. This one's a little spicy, and loosely based on something I tried from the markets up here. It's pretty cheap to make.

~Potato
~Garlic (3-4 cloves, more if you really like garlic)
~1/2 onion or similar (diced really finely)
~tablespoon of oil/butter.

'Panch Phoran' spice mix - which you can make easily from scratch. Use the whole seed spices, not ground, for this part:
~teaspoon of fenugreek
~teaspoon of nigella seed
~teaspoon of cumin
~teaspoon of fennel
~teaspoon of brown mustard seed.

Later on you'll also need:
Basmati rice per person.
salt & black pepper
turmeric, garam masala, chili powder.
cornflour
boiled water.
1/2 lemon.

Method.
1. Cut up the garlic and onion, add to warmed oil in a saucepan. Sautee until aromatic and golden.
Add panch pora, and wait until the mustard seeds start popping. Peel and dice your potato while you wait.

2. Add potato to onion, garlic, spices and oil. Add just under a tablespoon of turmeric, 1/4 tbsp chili, and 1/2 to 2/3 of a tbsp of garam masala. Stir well, try and coat the potato liberally with the seeds and spices. Stir for 2-3 minutes, add boiling water to about an inch below the top of the potatoes.

3. Cover, shake occasionally to stop potato sticking. If in ten minutes the sauce is still quite thin, you can add up to a tablespoon or so of cornflour/plain flour to thicken. Continue to stir and reduce.

4. When potato starts to look cooked, add a few tablespoons of lemon juice, stir well, put back over heat for a bit over 5 minutes.

5. Serve with rice.

(If far too spicy, add a little bit of coconut cream/milk) The original recipe only involved potato, but I think it'd be good with sweet potato, pumpkin, or peas, too)