There is established the Healthy Food Financing Fund, which shall be comprised of federal, state, or private grants or loans, federal tax credits, or other type of financial assistance, for the construction or expansion of grocery stores to expand access to fresh produce and other nutritious foods in underserved communities. Monies in the fund shall be used, to the extent practicable, to leverage other forms of financing. No less than 25 percent of the monies in the fund shall be expended in the form of grants or forgivable loans.