I used just ripe pineapple for this recipe. The taste of pineapple was very subtle. If you prefer a strong pineapple taste, you can use over ripe pineapple or increase the qty of pineapple.
If you want to reduce the quantity of coconut milk, you can cook wheat, dal and pineapple in 4 cups of water instead of thin coconut milk. However, the taste and flavor is better with coconut milk.
I've used Maggie coconut milk powder for this recipe.