Assuming you don't have any Allergies, anything that is whole grain is healthy. Oatmeal is very healthy as long as you don't add a lot of sugar. Bulgar, barley, and rye are also healthy. Brown rice is healthier than white rice.
grassland
Oatmeal is best to consume for a fiber rich diet. Barley is also good and high in fiber as well as whole grains.
Grains or Vegetables
Obsidian cools so quickly the mineral grains do not have time to form.
low power:100 small pollen grains high power:25 large pollen grains
cooking time
The best grains i've found online are from tibicos.org
You best bet is to get "kefir grains" which act as a starter. Find milk grains for milk kefir and water grains for a juice-like kefir drink. The grains are widely available online for purchase. You can often find people sharing them in your community as well.
nose porque
Since some food from each food group is necessary for good nutrition, there is no "best" food group.
Fruits, vegetables, nuts, and whole grains are the best high fiber foods to eat.
Whole grains, vegetables, legumes, and some fruit and nuts.