Massaman curry (from tinned paste)

Sascha bought this little tin of curry paste when he stayed with us (and S demanded he make us dinner when we got home from work / before going to basketball). The remainder of the tin had been in the fridge ever since - I wasn't sure how long it'd last but guessed it needed using up before too much longer. Last night I got home before S and decided it was time for curry. I filled it with a pretty random selection of stuff from the corners of fridge, freezer and cupboards. Which actually worked out really well.

The paste is good, and tinning means it has no unidentifiable ingredients. In case I want to try and recreate it / find it again, it is labelled Massaman curry paste, and the ingredients list is: garlic, sugar, soybean oil, dried red chillies, tamarind juice, shallot, salt, lemongrass, spices (coriander seeds, cumin, cardamom, cinnamon, bay leaves, lesser galanga, cloves), kaffir lime, galangal, citric acid (E330).

1/2 tin Massaman curry paste (see above)
1 tin coconut milk
1/4 butternut squash, deseeded and chopped into ~2 cm chunks
2 medium potatoes, washed and chopped into ~1 cm chunks
~1/4 cup okara (optional - chucked it in because it needed eating)
~1/2 cup frozen chickpeas
1/2 block super firm tofu
~1/2 cup frozen peas
~2 tbsp crushed toasted peanuts
~2 tbsp chopped coriander

Heat a deep frying pan with a lid. Put the curry paste and half the coconut milk in and stir-fry for ~ 3 min. Add the potato and squash. Cover and simmer for ~15-20 min, until the potato is almost cooked, adding the okara after about 5 min if using. Add the chickpeas and tofu and heat for another 5 min or so, then add the frozen peas and heat for 2-3 min, until they are cooked. Take off the heat and stir in the toasted peanuts. Serve with rice, and with coriander sprinkled on top.