Short Answer 
To convert grams to cups, use the specific conversion factor for each ingredient, as 100 grams generally equals about 1/2 cup, but this varies due to density. For precise measurement, a kitchen scale is recommended over measuring cups, and having a conversion calculator or chart available can help with accurate cooking and baking.
Step 1: Understanding Weight Conversion
To convert grams to cups, it is important to know the specific conversion factor for different ingredients. For most common cooking uses, 100 grams is equivalent to about 1/2 cup. Remember that the conversion may vary depending on the ingredient due to differences in density, so always check for the correct measurement.
Step 2: Using a Scale for Accurate Measurement
The most reliable way to weigh 100 grams of an ingredient is by using a kitchen scale. Measuring spoons and cups can provide only an approximate weight, which may lead to inaccuracies in your recipes. For best results, weigh your ingredients directly on a digital scale to ensure precision.
Step 3: Utilization of Conversion Tools
Always keep a conversion calculator or a chart handy to quickly find the equivalent weight or volume of ingredients without a scale. Many calculators include options for over 20 common kitchen ingredients and allow you to input product density for more accuracy. This can greatly assist in cooking and baking, ensuring that your measurements are correct.