My favourite is a good couple of tablespoons of pesto, parmesan cheese and pepper.

The Gaffer's delight.

I know only have mash if I can mix 1/3 to 1/2 sweet potatoe in. That way all it needs is a bit of milk. No fat necessary.

We use Smash for convenience and add some horseradish sauce. Lovely.

I use either maris piper or desiree potatoes. Mash - to me at least - has to be thick and smooth. I use obscene amounts of butter, probably about half a pack for 4 people. White pepper and salt. I pass it through a ricer before adding everything. Sometimes for even extra richness i'll add a couple of egg yolks and beat those in. Mash isn't a health food, so I don't like the cut down versions using olive oil or creme fraiche. Its butter or go home for me.

Same here, I never peel spuds