Re: grams to cups
Wikipedia states in its article on Cup (unit):
Conversion to and from metric recipes:
In metric regions, cooking recipes normally state any liquid volumes larger than a few tablespoons in millilitres, the scale found on most measuring cups worldwide. Non-liquid ingredients are normally weighed in grams instead, using a kitchen scale, rather than measured in cups. Some recipes in Europe use the decilitre (1 dL = 100 mL) as a cup-like measure. For example, where an American customary recipe might specify "1 cup of sugar and 2 cups of milk", a metric recipe might specify "200 g sugar and 500 mL of milk" (or ½ litre or 5 decilitres). Conversion between the two measures must take into account the density of the ingredients (granulated sugar, 0.8 g/mL; wheat flour, 0.5–0.6 g/mL; table salt, 1.2 g/mL).