Derek,
this is quite key i feel to getting a good curry so worth practising - took me about 3 mths
link to the method i use
https://curry-recipes.co.uk/curry/index.php?topic=2444.msg22679#msg22679i've also (for the 2nd time) tried the slow boat technique (see SnS June 08 Madras or Bruce Edwards - link below)
BE slow boat "frying"
https://curry-recipes.co.uk/curry/index.php?topic=2815.0i've now decided it does not matter which way - only to avoid burning the spices (i've not managed to do it so i do feel most people with some cooking experience don't need to be overly cautious - just use their eyes and smell)
back to your No's
1) if it's chopped then don't use high only medium until their cooked through. paste is ok on high
2) max is 30 secs for the spice mix on high and 60 secs on medium - as soon as a spice smell is given off it's done or its become a darker colour and u feel times up. stir all the time
3) i then add 1/2 a ladle quickly into the spice (to stop any chance of burning) and i fry this off until the water has started to go - u can see the change - u get spitting. stir all the time.
4) then add rest of base. Good stir needed - make sure u get the base and the spice mix all mixed in and off the bottom of the pan. then simmer for ~5 mins. stir now and again
tips:
a) for a while i used 2 hobs - 1 to fry and 1 for the simmer. i can manage with 1 now through practice
b) take the pan off the heat to control the heat when u feel the need as opposed to adjusting the heat setting
c) when simmering push the pan backwards & forward on the hob and stir with he other hand - helps to stop spitting