You may deduct 100% of the meal cost. Although the general rule is that only 50% of business travel meals are deductible, the exception is that Meal expenses are 100% deductible if the business is reimbursed for the expense (and the reimbursement is included as income).
Reference: https://www.cpa-wfy.com/meals-expenses-tax-deductibility-50-vs-100/
