First of all, [wort concentration (12°P)] and [wort gravity (1.048)] are actually a conversion relation. They both represent the content of extract in wort, that is, the sugar content. General will, the proportion of water is 1.000, so the proportion of wort will be greater than the proportion of water, because the starch in the wort (wort) through enzyme hydrolysis of fermentable sugars and fermentation of sugar, so the proportion of wort must be greater than the proportion of water