Step 1

Prepare the spice blend by mixing the curry powder, turmeric, cumin, ground coriander seeds and cinnamon in a small bowl.

Step 2

Heat the oil in a large skillet. Add the onion and saute for 4 minutes over medium heat. Add the diced apple and cook for another 2 minutes.

Step 3

Add the minced ginger and garlic and stir.

Step 4

Add the spice blend to the onion mixture and stir constantly as it cooks for 2 more minutes.

Step 5

Add the flour and stir constantly as it cooks for 2 minutes. Scrape the bottom of the pan to prevent burning.

Step 6

Gradually add the chicken stock, stirring constantly to prevent lumps from forming.

Step 7

Add worcestershire sauce, sugar, tomato puree and stir. Season with salt and pepper.

Step 8

Bring the sauce to boiling point, stirring constantly. Then reduce the heat to low and simmer the sauce for 15 minutes.

Step 9

Turn the heat off, and allow the sauce to cool slightly before blending. When cool enough add the sauce to a blender or food processor and blitz until smooth.

Step 10

Return the sauce to the pan over medium heat. Add golden raisins if desired.

Step 11

Serve hot with a side of chips or french fries.