1. Traditional foods belonging to Korean culture, such as kimchi and Korean Chili sauce.

2. Meet Korean food safety standards, such as no additives and harmful substances.

3. The carrying amount is within a reasonable range, such as eating by yourself and giving it to relatives and friends.

Therefore, if the millet, rice, noodles and other grains you bring meet the above conditions and are within a reasonable range, you can bring them into Korea. However, it should be noted that the food you carry needs vacuum packaging or sealed packaging, and you can't carry odor or liquid.

In addition, according to the regulations of International Air Transport Association (IATA), the capacity of liquids, gels, aerosols and other articles must meet the following requirements:

1. All liquids, gels, aerosols and other articles with a capacity exceeding 100 ml must be placed in transparent plastic bags with a capacity not exceeding 1 liter.

Each passenger can only carry one such plastic bag, which must be taken out of the hand luggage during the security check.

Therefore, if the carrying capacity of food exceeds 100 ml, it needs to be packed according to the above regulations to avoid being refused to be carried on the plane during security inspection.