based roughly on Andys sauce,did'nt have celery,radishes ect,just put it together this morning adding things like a couple of tsp of Patak vindaloo paste,thing i have picked up on this forum,sauce does not taste to bad,someone could improve on it.Used two onions just to make a batch for two curries,certainly won't go to waste,added chicken and g/peppers.
hope this helps C.K.
p.s sauce more of a dark orange,not quite as red as the photo shows