SCOBY: acrónimo del ingés: Symbiotic Colony Of Bacteria and Yeast, colonia simbiótica de bacterias y levaduras.
| producto | hongo levuriforme | bacteria |
| kombucha | Saccharomycodes ludwigii, Saccharomyces cerevisiae, Schizosaccharomyces pombe, Pichia fermentans, Zygosaccharomyces bailii Candida stellata, Brettanomyces bruxellensis, Torulaspora delbrueckii | Bacterium xylinum, Gluconobacter oxydans |
| kéfir | Kluyveromyces marxianus | Lactobacillus acidophilus |
| viili | Geotrichum candidum, Pichia fermentans | Lactococcus lactis, Leuconostoc mesenteroides |
| cerveza de jengibre | Saccharomyces florentinus (=Saccharomyces pyriformis) | Lactobacillus hilgardii (=Brevibacterium vermiforme) |