Business travel meal expenses are entered in the same area as other business expenses. See sample screenshot attached. Note that business meals are only 50% deductible as business expenses (you will enter the complete expense and TurboTax will figure the 50% deduction). See below for more information as well as where to enter them in TurboTax.
https://ttlc.intuit.com/replies/3301777
https://ttlc.intuit.com/replies/5802554
