TL;DR Fermented foods are traditional cultured foods like yogurt, kefir, sauerkraut, and kimchi. Use them as sides and condiments. Start small if you are new to them.

Common kitchen ferments

Food Easy use
Yogurt Breakfast bowls, sauces
Kefir Smoothies, cold soups
Sauerkraut Side with eggs or bowls
Kimchi Scrambles, rice bowls
Miso Soups and dressings

Practical tips

  • Choose plain yogurt to control sugar
  • Add ferments at the table when heat would be harsh on delicacy
  • A forkful can be enough at first

Related: Gut-friendly cooking.