I do a greek roast tats recipe ... good for early and maincrop spuds ...
50/50 mix of olive oil and vegetable oil (for cost reasons - the olive oil flavour is there)
chopped garlic
herb - I use thyme, but oregano, rosemary also work
black pepper - I add black pepper to almost everything now
lemon juice - the more the better !
make up the basting mixture above, and roast the potatoes as normal, tending to a low heat so they dont brown ...
The basting mix can be made into a sauce/gravy afterwards with veg water and thickening ...
Personally, this is the best method of cooking potatoes that I have come across so far ... and my family endorses that !