Prepare the vegetables by finely shredding the cabbage, grating the carrot, and dicing the yellow onion.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the diced onion to the skillet and sauté for 3-4 minutes until it becomes translucent and soft.
Add the ground turkey to the pan, breaking it into small crumbles with a wooden spoon, and cook until fully browned.
Stir in the minced garlic and grated ginger, cooking for about 1 minute until the aromatics are fragrant.
Add the shredded cabbage and grated carrots to the turkey mixture, tossing frequently to combine.
Pour the tamari and sesame oil over the mixture, then season with sea salt and black pepper.
Continue to sauté for 5-7 minutes until the cabbage has wilted but still maintains a slight crunch.
Transfer the stir-fry to a bowl and garnish with thinly sliced green onions before serving.