Aperture - depending on required Depth of Field. There are online calculators to help you.
Shutter speed - will be the result of the 2 previous settings. If too low to handhold then get a tripod.
Why shooting mode Tv? Is your food still alive and you need to freeze motion? Do you know how to operate Manual mode with exposure metering? Obviously not, so it's off. But since aperture needs to be set in order to get the right Depth of Field .. hey, there is this Av mode
As mentioned earlier: you might need a flash for proper illumination. But if you want to capture with existing light than a tripod is mandatory. Go and try, but try in a structured way. No point fiddling around with all settings and jumping through modes without understanding.