Use a good windscreen. Form it into a circle.
Carry a few cotton balls, each with a little vaseline rolled up inside.
Pinch off a bit of one of these cotton balls (it takes very little) and make a thin wick with it. Put one end of the wick under one end of the Esbit cube in the tray of whatever Esbit burner you are using.
Shelter the cube and wick as best you can with your windscreen, body, pack, natural objects, whatever you have.
Light the wick with a match or lighter and get your windscreen down all the way around in place right away.
This should do it.