One of the best ways to do this is to look at the color of the berries. Depending on where your berries grow, their colors can range from light, but vibrant, red to a very dark crimson color. They should also be firm to the touch. These berries are the ones that make it into the fresh produce section of your grocery store. They are best used for cooking and baking. While this may sound strange, a great way to sort the best berries from the not as great ones is to bounce them. Quality berries are firm and springy--meaning they bounce off the ground nicely. They bounce because of the air bubbles inside the berries. Don’t throw them as hard as you can at the floor, but a simple drop against a flat surface should be enough to tell you whether or not your berries have the bounce. You can either use the fresh ones in a recipe, or freeze them for later use. You might also consider  drying some of the cranberries for a delicious snack. Fresh, bouncy cranberries will last for up to two months in the refrigerator.

TL;DR in Indonesian:
Pilih berry berdasarkan kualitas. Pantulkan berry. Kumpulkan berry yang kenyal dan buang sisanya.