Question

mention any two cost effective ways of cook​

Answer 1

1)using biogas

2)using solar cooker

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Answer 2

Boiling

Boiling is quick, easy, and all you need to add are water and a touch of salt.

Steaming

Cooking anything from fresh veggies to fish fillets this way allows them to stew in their own juices and retain all their natural goodness.

There are many other ways like microwave,etc