Given the tone of the post, I was assuming the menu was only available on Instagram, i.e. they did not have a paper menu. Obviously if they have a paper menu, which most restaurants do, you can just go there and read it.
I didn't assume a paper menu, I'd love it if there was though.
Those at least can be scanned, pinned to the fridge, etc.
But in my experience they mostly have a board over the counter that I'm forced to stand there and take slightly blurry photos of.