Energy for cooking

4. What is the principal source of energy used for cooking?

Question 4: What is the principal source of energy for cooking?
Mark only one box. If [the informant] says that there are various sources of energy used, ask that he or she indicate the principal, which means the one that the household uses the most.

If he or she tells you that none is used, because this household does not cook, mark the box 'does not cook'.