Complex sentence: In general, the hotter a grain is kilned, the less its diastatic activity; as a consequence, only lightly colored grains can be used as base malts, with Munich malt being the darkest base malt generally available.
Split into simpler sentences: In general, the hotter a grain is kilned, the less its diastatic activity. As a consequence, only lightly colored grains can be used as base malts, with Munich malt being the darkest base malt generally available.