Step 1

To Make the Dough: In the bowl of a stand mixer fitted with the hook attachment, stir together flour, sesame seeds, sugar, nigella seeds, za'atar, salt, and turmeric until well combined.

Step 2

Turn mixer to low speed and add the oil, followed by milk and yeast and mix until combined.

Step 3

Add the water and mix until the dough comes together and pulls from the sides of the bowl but is still stuck to the bottom, about 2 minutes. Let rest for 5 minutes.

Step 4

Turn mixer to medium-low and knead until dough forms a soft, smooth ball, about 2 minutes.

Step 5

Grease a large mixing bowl with oil, transfer dough to mixing bowl, cover, and let stand at room temperature until doubled in size, about 1 hour.

Step 6

Preheat oven to 400°F (200°C) and set oven rack in middle position. Line 2 baking sheets with parchment. Divide dough into 10 equal portions (about 3 ounces/90g each), forming each into a smooth ball and pinching at the bottom. Set dough balls on prepared baking sheets. Cover with a damp kitchen towel and let rest 10 minutes.

Step 7

Working with 1 dough ball at a time and keeping the rest covered, place dough ball on a work surface and, using your hand, flatten into a 3 1/2-inch disc.

Step 8

Using your fingers, poke a hole in the center, then gently stretch the dough out, rotating it as you stretch, to form a roughly 4-inch ring. Return to parchment-lined baking sheet and repeat with remaining dough balls.

Step 9

To Boil, Top, and Bake Ka'ak: Fill a wide pot with 2 inches water. Add grape (or date) molasses and bring to a boil over high heat. Working in batches, add 2 or 3 ka'ak (only as many as can fit with room to spare around each) and boil, turning once, for 30 seconds per side. Using a spider, slotted spoon, or slotted spatula, remove bagels from boiling water and let drain briefly, then return to parchment-lined baking sheets. Sprinkle all over right away with sesame and nigella seed mixture. Repeat with remaining ka'ak, making sure to keep boiled and topped ka'ak covered until ready to bake.

Step 10

Working with 1 baking sheet at a time, bake ka'ak until golden brown all over, 20 minutes. Let rest 15 minutes before serving. Repeat with remaining baking sheet of ka'ak.