The game is about rolling sausages over grills to cook them on both sides. However, that's completely unrelated to why it's so acclaimed.

This game introduces a very small set of controls and mechanics (you basically only have the arrow keys, and initially can just move around), and combines it with minimally small, yet surprisingly hard puzzles. Every puzzles is distilled to its smallest form, and involves a genuinely satisfying eureka moment.

The game then explores every possible hidden way to use the minimal set of mechanics introduced, before introducing a new mechanic (e.g. early on you'll be able to suddenly 'stab' you sausages which allows you to move them around differently. So you become a master of the game as you progress.

The problem for new players is that it's deceptively difficult to solve even the simplest puzzles + it encourages you to explore and learn how things work instead of giving you hints. This makes inexperienced players abandon it way before it fully reveals itself (which takes many hours into the game).

What I suggest is if you are new and are frustrated, find a Youtuber that solved it so that you can look at what they did. This way you won't get stuck to the point of leaving it, while still allowing you to fully enjoy it.