Miriam's Not-So-Secret Challah

Ingredients (9)

• + 2 cups water add to pantry
• + ½ cup margarine add to pantry
• ✓ 7 cups bread flour, divided
• + ¼ cup white sugar add to pantry
• + ¼ cup brown sugar add to pantry
• + 3 (.25 ounce) packages active dry yeast add to pantry
• + 1 tablespoon salt add to pantry
• ✓ 4 eggs
• + 1 tablespoon poppy seeds add to pantry