You may deduction up 50% of meal expenses by using eithwer "actual
cash" meaning you have keep a log of meal expenses or your may use
"standard meal allowance" meaning you deduct standard meal amount which
is typically $46 a day. I have included a link from the IRS website with
more information on meal expenses.
http://www.irs.gov/pub/irs-pdf/p463.pdf
