Using the word "reimbursed" is what people get wrong. You incur something and you Charge something. That isn't Reimbursed. That is Sales.

Example: I buy a Large envelope for mailing your stuff to you, along with some binders and other presentation materials. That is my Office Supplies expense. I charge it to you at cost or not, does not matter. The amount you pay me is my Sales revenue. If sales of material goods is subject to sales taxes, then you also see that I added the sales tax amount to the total you owe me.

Food is a different issue; all humans need to eat. "Food" you eat is not 100% business expense and the rules changed with the Dec 2017 tax regulation updates. No one on the QB peer user forum can give anyone the specific tax regulation guidance for what applies to your business; you need to meet with your own CPA to review which of your operations is treated in which manner, per those tax regulations.