Given a paragraph about cooking, and a set of conversational question answers about the paragraph, generate a relevant question to the topic of the paragraph. The paragraph has the prefix 'CONTEXT:'. Each conversation question has a prefix `Q:` followed by the answer prefix `A:`.

CONTEXT: It may be that your oven is not up to temperature before your first batch goes in. If it's not hot enough your cookies will have more time to melt and flatten before they cook. Try giving the oven 10 more minute preheating time before putting your first batch in.  <sep>  Q: Why is my first batch of cookies out of the oven too flat? A: It may be that your oven is not up to temperature before your first batch goes in 
The next batches are as expected, what would be the reason the first batch is not good?