Sure. For breakfast I will often have a chocolate protein shake (Vega brand) with 16 oz. of unsweetened almond milk. On weekends I might have one or two cooked eggs with some cheese and salsa. If I'm not hungry, I don't eat anything.
Lunch I might have some tuna salad with mayo, half an avocado cut up, half a dozen cut up grape tomatoes, and just eat all that mixed together with a fork. Or, I might have one or two turkey rollups (slice of deli turkey wrapped around a piece of string cheese), and I might put some avocado slices in it).
If I'm hungry for a snack, I might have some dry roasted almonds, or some black olives, or a dozen slices of pepperoni.
Dinner we try to get more inventive, at least on weekends. I made some spicy sautÃ©ed shrimp with cheesy cauliflower "grits" and wilted swiss chard. That was SO YUMMY. We recently had braised short ribs with cauliflower "mashed potatoes". Last night we made homemade tortillas with coconut flour and egg whites, and we grilled halibut and made fish tacos with jack cheese, avocado, a cilantro/onion mix, and a sour cream/lime cream sauce.
We might also make "pizza" with cheese, pepperoni and hot Italian sausage over Portobello mushroom caps. A common go-to is just a big salad with lots of veggies, avocado, and a protein (grilled shrimp or chunks of chicken thighs).
With keto it's important to follow your "macros" - total calories, net carbs, protein and fat. About 60-65% of my total daily calories come from fat; 30-35% from protein, and 5% from carbs. There's also something called "lazy keto" where you just stay below 20 carbs. Once we've been on it for a while I will probably do that.
We've realized the key to staying on it is to be inventive, so we've invested in a few good keto cook books and are trying new recipes all the time.
The thing that has been the hardest for me is eschewing my evening glass of wine. I miss it.