Hi, I am new to brewing, currently I'm the middle of my second brew. My last was a lager and it was lovely if I say so myself. However, this one is Woodforde's Wherry ale that needed no sugar at first but half a teaspoon per pint. I actually miscalculated and thought I needed to put in a little more than half a teaspoon in each 500ml bottle instead of a little less. However, I have heard that too much sugar can make a 'bottle bomb'. Firstly, was exactly is meant by that? Secondly, how much is too much?