These were really delicious and this is what I did.
some floury potatoes, suitable for roasting - mine were Maris Pipers
spray oil (I have a Misto and use it a lot)
For the spicy coating
equal amounts of smoked paprika, garam masala and garlic salt, mixed together
I didn't peel the potatoes as they were sound apart from a few sprouts which I rubbed off.
Cut the potatoes into wedges.
Steam cook them for about seven minutes. I prefer to steam than to boil as they don't end up so wet. It's like par-boiling them.
Spread them out to steam dry and cool.
When they are cooler, put them in a bag with the spice mix and some sprays of oil and gently toss them in the mix until coated.
Heat the oven to between 180 and 200C.
Lay the wedges on some parchment on an oven tray. Bake for about half an hour until browned and cooked.
If you've made a lot, instead of baking them, lay them out on a tray and open freeze them before bagging and labelling.
They really are tasty and so much better value than the ones you buy. You can do a whole lot at a time and you can ring the changes with the spices.