Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in the Registration Statement and Prospectus of our report dated September 28, 2007 on the statement of financial condition of GreenHaven Continuous Commodity Index Fund as of December 31, 2006, our report dated September 28, 2007 on the statement of financial condition of GreenHaven Continuous Commodity Index Master Fund as of December 31, 2006, and our report dated September 28, 2007 on the consolidated statement of financial condition of GreenHaven Commodity Services LLC as of December 31, 2006. We also consent to the statement with respect to us as appearing under the caption “Experts” in the Prospectus.

/s/ GRANT THORNTON LLP

Atlanta, Georgia

September 28, 2007