Given the task definition and input, reply with output. In this task, you're given a review from Amazon's food products. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral or mixed, 4: good, 5: extremely good.

Excellent vanilla flavor. However I was not "delighted" that it curdled in hot coffee!!! Nasty and very unappetizing in appearance. I gave up using for hot coffee and use it for "iced coffee" with great results.
3