See this notice
https://www.irs.gov/pub/irs-drop/n-21-25.pdf
https://www.irs.gov/pub/irs-drop/n-21-63.pdf
https://www.irs.gov/pub/irs-drop/rp-19-48.pdf
Not all meals are allowed to be deducted. Either per diem rules must be met and/or the rules for business meeting/entertainment rules must be met, so the rules for Section 162 and 274 allowing the meals in the first place must be met.
TT probably rates this as high risk, because this is a highly audited item by IRS. Over the years a lot of adjustments have been made in audits in this area as many people tend to over deduct in this area.