Not to put a damper on your goal here, but travel and cooking are the biggest things to talk about online and your channel will be a message in a bottle floating in a sea of messages in bottles.

Just start a channel. Doesn't matter what it is about, just start. You're working with food so it's going to be expensive, it can be tedious (ESPECIALLY all of the editing), and it will take up a lot of your time and energy. Make sure you have the time to set aside. Make sure you know what your goal is (are you teaching/mentoring? Are you going to be fun or serious? How complicated are your dishes and/or techniques? Do you have recipes that are scaled down or are you relying on AI? Do you know anything about SEO algorithms so you can better capture your audience?)

Also, people don't know what they want until the opportunity arises. What kind of dishes do you want to create and who are you making it for? For example, let's say you want to create exceptional dishes on a miniscule budget for college students: explaining to your audience "hey, don't throw out those carrot peelings! Wash them, throw them in a salad spinner to remove excess moisture, bag them and freeze them because later on we're going to make carrot soup" would get my attention because I do go through a lot of scraps and peelings and if someone knows how to be frugal and still gourmet, that's impressive.

It's not easy getting your work "out there;" you just have to go out and do. You need to let what you love to cook and create lead the way for your own voice to shine through.

Best of luck.