I'd say I cooked pulses in the pressurecooker; they required...
Who are you writing for? I ask because I did not know what you meant by five whistles and had to look it up: India's Whistling Pressure Cookers
Please check the sentence mentioned below and let me know how to frame it in a better way.
I cooked pulse in the pressur cooker, it required five whistles. I asked my mother to turn off the gas after five whistles.
- I put pulse in the pressure cooker and had my mother turn off the gas after the fifth whistle.
- It takes five whistles to cook pulse.
Yes, but you still need to say pulses.