My gods that sounds so fucking gross! What a fucked up idea, if you want cold gravy so much you cow just make some in the pan and leave it there, its not hard. But then I am not throwing a weight heavier than a linebacker around! >:) Freshly made mash with hot, steaming gravy is delicious to me! A bit of chicken breast (oven cooked - breasts from a butcher) to dip into it and broccoli, carrots, perhaps some Yorkies (Yorkshire Puddings) too and you have a yummy, classic and very British meal! :)    My SO's nana is in her mid-80's and always refuses my help when she invites us over for Sunday dinner, she is a frail and little old lady but she makes incredible Sunday Dinners, she cooks with old methods like using lard but is a healthy UK size 8/10. She has more motivation and determination (she is very stubborn too) than 20 year old fats with their whole lives ahead of them (full of laziness   44c6  and gluttony).