I used Indian beef for this recipe. After the first whistle on full flame, I reduce the flame to low-medium and cook for 12-15 whistles. Keep it closed for 15-20 mins. This curry has a thick gravy, you can adjust the consistency by adding hot water. You can also try it without cashew coconut paste; however, this paste makes the gravy creamier and richer. If you don't have meat masala, add 1 tsp garam masala and 1/2 tsp fennel powder (perumjeerakam).