Well when you eat vegetarian, you're already aware of every sauce and every ingredient. You're just choosing to allow a few additional things that vegans exclude, like milk and eggs.
If you really can't check sauces yet, you could do your own version, where you don't worry about sauces. :)
Then you can say "nobody got abused or harmed at all for this photo" instead of just "I didn't have anybody killed for this photo"! It's a huge upgrade. Even if you only try it for a week, it's a win for you and for other sentient animals! Even a single day is progress in the right direction, or even one meal or one trip to the grocery store. :)
I only bring it up, because your post brings it up, and also because I've seen you posting a lot in the past about animal welfare. Nothing personal!