Preheat oven to 350°F (180°C). Grease three 6-inch round pans, line bottoms with parchment, and grease the paper lightly.
Sift flour, baking powder, baking soda, and salt into a bowl; whisk briefly and set aside.
In a large bowl, whisk sugar and milk until the sugar begins to dissolve. Whisk in oil until the mixture looks smooth.
Add yogurt and rabdi essence; whisk until smooth.
Add dry ingredients in two additions, folding gently until no dry streaks remain. Do not overmix.
Divide batter evenly among the three pans (about 275 g each if you weigh).
Bake 35 to 45 minutes, until a skewer inserted in the center comes out clean.
Cool in pans 5 minutes, then turn out onto a rack, peel parchment, and cool completely.