Measuring out a single portion of dry pasta is more difficult than it may sound. Thanks to the many sizes and shapes of dry pasta, you cannot simply use measuring cups. Doing so would require you to crumble spaghetti, for example, into small pieces to make it fit properly into the measuring cup. Instead of being measured by volume, a serving size of dried pasta is measured by weight. As a result, the only truly accurate way to measure a serving size of dried pasta is to use a scale.
Place a container on top of your food scale. The size and shape of this bowl should correspond to the type of pasta you wish to measure. You may need a taller, thinner container or a wider, flatter container depending on the type of pasta.
Press the "Tare" button on your scale, if applicable. This will reduce its reading to 0 to compensate for the container. If you do not have a scale with this button, pay attention to the exact weight your scale reads when it holds only the container.
Add pasta to the container on the scale until it reads 56.7gr if you used the "Tare" button, or 56.7gr above its prior reading if you did not use a "Tare" button. You have now measured out exactly one serving of pasta. This will make approximately 1 cup of cooked pasta.
Even though 56.7gr. of dry pasta cooks into one serving, you may find that one portion -- the amount you wish to eat at a single time -- is significantly more. You may wish to make double this amount, to around 2 cups of cooked pasta, for each person you wish to serve.