Hello, if I have a target OG and I'm a little off it. As a pure example, say I'm 0.062 and I want 0.058 - I could add sugar. I can work out how much sugar. But I will need to boil this first right? Before adding it into the kettle prior to fermentation I don't know how to work out how much water I'd boil it in? Just literally enough to boil it?