Combine the yogurt, turmeric, salt and pepper in a medium-sized bowl. Add the ginger and garlic, then add the chopped cilantro. Whisk it up together to form a thick, smooth paste. Set it aside to let the flavours infuse while you prepare the chicken thighs.
Remove the skin of the chicken thighs or trim the fat if you prefer to keep some of the skin. Make two slashes in each chicken piece, then add them to a large bowl.
Using a large spoon or wearing gloves, add the marinade to the chicken and mix it between the slashes to cover each piece until they are smothered in all the marinade.
Cover the bowl with plastic wrap and refrigerate for at least 2 hours or overnight.
Set the grill at 400°F and grease the plates with oil. Sometimes I like to use copper mats, making the chicken easy to flip while cooking.
Place the chicken thighs, flesh side down, onto the hot grills and cook them for about 6 to 7 minutes on each side or until they are golden in colour and have reached an internal temperature of 165 degrees Fahrenheit.
Remove the thighs onto a warm platter to rest for about 5 minutes. Then, squeeze some lemon juice over the thighs, garnish with chopped cilantro, and serve with your favourite sides.