This is buckwheat. The sprouts shown are about 2 days old.
Soak seeds for the suggested time and then put about 2 tbs seed in a a damp towel.
Roll it up and fold as shown and place in a glass or some other place where they will be safe and not too warm or cold.
Don't let the cloth dry up but don't soak it, either. Check and re-dampen cloth as needed, twice a day should do it. If the seeds begin to smell sour, rinse thoroughly and re-roll in a fresh clean, damp cloth.
Allow sprouts to grow to your preferred age and eat, eat, eat!
Buckwheat sprouts contain Lysine which is an important amino acid.