Gonna try another vegetable curry

I'm wondering about adding in garlic and ginger, should I add it at
the same time as the paste or just before?

I'm also going to add in powdered ginger as I can't be arsed with the
root - I just don't have the tools to mash it up. How much dry ginger
should I put in?

How about this?

1x large onion
Some frozen peas
2-3 diced potatoes
1-2 diced carrots
Cauliflower and broccoli florets
about 1/3 jar of Madras paste
Tin of chopped tomatoes
Tomato puree
1-2 cloves of garlic
1/4 tsp dried ginger
water
chillies - possibly chopped depending on how hot I want it :D

Thanks,
Luke.