Peel the russet potato and cut into 1-inch cubes.
Place potato cubes in a pot of salted water, bring to a boil, and cook for 12-15 minutes until fork-tender.
While the potatoes cook, heat olive oil in a large skillet over medium-high heat.
Add the ground turkey to the skillet, breaking it apart with a spatula, and cook until browned and fully cooked through.
Mince the garlic cloves and finely chop the fresh rosemary and thyme.
Drain the cooked potatoes and return them to the warm pot.
Add the ghee, Greek yogurt, minced garlic, rosemary, thyme, sea salt, and black pepper to the potatoes.
Mash the mixture thoroughly until the potatoes are velvety and well-combined with the herbs.
Portion the garlic herb mashed potatoes into a bowl and top with the savory sautéed turkey.