Soak the brown rice and red lentils in water for at least 4 hours, then drain and blend with a splash of fresh water into a smooth, pourable batter.
Allow the batter to sit in a warm place for 8-12 hours to ferment until slightly bubbly.
Heat the coconut oil in a skillet over medium heat and add the cumin seeds until they begin to sizzle and release their aroma.
Add the ground turkey to the skillet along with turmeric, sea salt, and black pepper, breaking it apart and cooking until fully browned.
Stir in the frozen peas and fresh spinach, cooking for 2-3 minutes until the peas are tender and the spinach is wilted.
Lightly grease a non-stick pan and pour a ladle of the fermented batter into the center, spreading it in a thin, circular motion to form a crepe.
Cook the dosa for 2-3 minutes until the edges lift and the bottom is golden brown and crisp.
Place the turkey filling in the center of the dosa, fold it over, and serve immediately garnished with fresh cilantro.