Time for a first page bump...
We use 120#/35 gallon grease drums at work. Usually, we go through 4 or 5 a year. The grease is in a clear, plastic bad inside the drum, so the drum doesn't hold moisture and rust. So, basically, I get a clean, "unused" drum, with a knock-down top. That sits outside on a piece of slate, about 2'x2'x1" thick, and raised up on 3 bricks standing on end, so the bottom don't rot out.
It's usually full by the end of the season - just 1 stove, but used to heat an uninsulated out-building I use as a shop. The ash from the previous year is used this year for snow melt/traction aid this winter, and tilled into the garden this spring.
Just to be clear - the ash is over a year old before it get used.
No hot embers yet :tongue2: