For those who have liked the above or are interested further have a look at these
this is a bit dated but gives a good idea what to expect
the issue with deep seated or chip / frying pan fires with dry powder can be seen here:
and how other extinguishers behave on burning chip pans
problem with powder on a fuel fire it can re light once the powder has dispersed or there is a hot spot / fuel at auto ignition temperature
it has been known to cause more damage than the fire
http://www.lincoln.anglican.org/pdf_view.php?id=809
this is what we have in the house by the back door in the kitchen...
afff additive spray covers A B and F fires (textiles, flammable solvents, and chip pan fires) and is safe to 1000v at 1m distance and a blanket
upstairs we have a 3 litre chubb Hydro spray water unit
in the garage i have 2 Dry powder the same as what dave linked above a foam , water and a CO2.... ( i move the water and foam into the house if it gets very cold over winter)