Due to an industry-wide honey shortage, companies ae supplementing regular honey with Honeydew (also referred to as Forest Honey or Pine Honey).
While regular honey is produced by bees collecting nectar from flowers, Honeydew honey is made by bees collecting a sweet substance secreted by aphids (tiny insects that live on tree branches). The Kashrus status of such honey is subject to Halachic debate.
Because of this concern, KLBD recommends that honey should only be purchased with a reliable Hashgacha.