Custom cooked weight and flexible portion sizing for meals

When cooking a meal, water and moisture evaporate, meaning the finished dish weighs less than the sum of its raw ingredients. Currently there is no way to account for this — if you start with 4 kg of raw ingredients you cannot record that the cooked result is, say, 3.2 kg. The request is to add: (1) a 'cooked weight' field on a meal so the app can calculate the correct nutritional values per gram of finished food, and (2) easy custom portion sizing so a user can quickly divide the cooked batch into any number of portions or enter a specific portion weight when logging.