In a medium pot, heat oil over medium heat. Add the pastrami, turkey breast, corned beef, and turkey roll and cook for seven to 10 minutes.

Add the ketchup, sweet chili sauce, duck sauce, mustard, garlic powder, and salt. Mix well and cook for five more minutes. Set aside.

Preheat oven to 350 degrees Fahrenheit. Line two baking sheets with parchment paper.

Dust your work surface with flour and roll out the pizza dough to 1/4 to 1/2 inches thick. Using a round cookie cutter or drinking glass, cut circles from the dough and place them on the baking sheets.

Spoon about one teaspoon of the meat mixture into the center of each circle.

Form three corners, pinching the edges tightly to seal the triangle. (If any of the hamantashen seem too full, remove some of the filling to avoid it overflowing during baking.)

Brush with the beaten egg and sprinkle lightly with sesame seeds and poppy seeds, if using.

Bake for 25 minutes, until golden brown. Drizzle with spicy mayo and lemon garlic dressing and serve warm.