Freshly harvested asparagus is easy to recognize: the spears are firm, juicy, and show no cracks. White asparagus has a beautiful sheen, while green asparagus is a rich, bright green. The tips of white asparagus are firm and closed. With green asparagus, they may already be slightly open from growing near the soil surface.
The cut ends of the asparagus spears should not be dried out or brownish. A gentle squeeze of the cut end should release an aromatic fragrance. But be careful: fresh asparagus breaks easily!
Green and white asparagus are best when they are seasonal and locally sourced. Ideally, the fresh spears should be bought loose. It's difficult to check the freshness of pre-packaged and sealed bundles.
The well-known test of whether bars squeak when rubbed together can indeed indicate freshness – or it can be a sign of damp storage. Therefore, the other criteria mentioned should be checked all the more carefully.