I have raised beds and normal levels, in my raised beds i have put manure on top of soil, and to make them up i have added soil from my local council site, its £1.00 bag its just a improver, not much neutrinos but it works in with the soil, and compost. so i have managed not to take to much of the rest of plot.
mine is Farley new
and i basically do what Kt Lawson dose, but then this will be my 2ND year, but its as a organised plot.