Starbucks is set to report quarterly results after the closing bell on Thursday. The big question of course, beyond what the coffee chain earns, is what it says about coffee prices. Starbucks is expected to post a profit of 66 cents a share, that would be up about 20% from the same period last year. Revenue is expected to come in at roughly $4.1 billion. One of the other key numbers that Wall Street will be focused is on same-store sales. Estimates are for an increase of roughly 5%. Starbucks said last month that it was able to raise its coffee prices, but while coffee may be the main reason customers walk into their stores, the coffee chain is looking to continue expand beyond beverages. Analysts believe food could be the next big winner for Starbucks. TheStreet's Laurie Kulikowski previews the results.

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