First add water and n then nestum powder.. n stir continuously...no lumps are formed this way..

No don't think any problem but the taste might change and it will get overcooked and the properties (nutritive value) might get killed..not sure though ..<br> Try once and taste the difference and see ..

If boil had any prblm??

Not boil??even formng lumbs

You can add warm water to it. And stir continuously...it will be fine ..