Gaining

Keeping the same diet, but adding increasing amounts of heavy cream?

This sounds like a sensible plan and I have gained successfully that way. It is highly likely to work if you can keep it up.
4 years

Keeping the same diet, but adding increasing amounts of heavy cream?

fatagainer:
Ive introduced 300ml heavy cream mixed with serious mass Twice a day a week later I’m up 11lbs it’s insane and it’s not just bloat it’s fat, I’m gaining all over. Go for it... I can’t wait to see what next week brings

That's great progress and I'm not surprised you are gaining quickly. I imagine you are actually using double cream since you are in the UK and this is even higher in fat and calories than than the US heavy cream. You are lucky your digestion can stand that much. I don't think mine could.
4 years