Natural wine has no legal definition, which is worth saying up front. Broadly it means wine made with as little intervention as possible: organic or biodynamic farming, wild yeasts rather than cultured ones, no additions or corrections in the cellar, and little or no added sulphur. Where a grower sits on that scale is a matter of judgement rather than certification.
What you taste is a wine that has been left largely to its own devices. Often that means a brighter, more vivid character and a texture that feels alive in the glass. Sometimes it means cloudiness, a faint spritz or a note of something wild, which are marks of how the wine was made rather than faults.
We taste everything before it comes in. These are bottles we think are genuinely good, not just interestingly made.