The Loire Valley’s white asparagus (asperge blanche) is one of France’s great seasonal vegetables — grown in the sandy alluvial soils along the Loire and Cher rivers (particularly around Vineuil and Contres in the Loir-et-Cher), harvested from April to mid-June, and prepared with a reverence that elevates a simple spear into a ceremonial first course. White asparagus is grown entirely underground, the beds mounded high with earth so the spears never see sunlight and thus never develop chlorophyll — producing a pale ivory to cream-colored spear that is sweeter, more delicate, and more buttery than its green counterpart. The harvesting technique is precise: each spear is cut individually below the surface with a special curved knife (gouge à asperges) when the tip just begins to crack the earth’s surface, at a length of 17-22cm. The canonical preparation is simplicity itself: the spears are peeled from just below the tip to the base with a vegetable peeler (essential — the outer fiber is tough and bitter), tied in bundles of 6-8 with kitchen string, and boiled upright in deep salted water for 12-18 minutes depending on thickness. The tips should protrude above the water line and cook by steam while the thicker bases cook in the boiling water — this ensures both end up tender simultaneously. The asparagus is served warm (never hot, never cold) with one of three Loire sauces: a classic vinaigrette with Dijon mustard; a mousseline sauce (hollandaise lightened with whipped cream); or simply with melted Touraine butter, a squeeze of lemon, and fleur de sel.
White asparagus: grown underground, no chlorophyll, ivory color. Peel from below tip to base. Boil upright: bases in water, tips in steam. 12-18 minutes depending on thickness. Serve warm (not hot, not cold). Three sauces: vinaigrette, mousseline, or melted butter.
The best asparagus should squeak when rubbed together. Save the peelings and trimmed ends to make asparagus soup — simmer in water 30 minutes, strain, and enrich with cream. A special asparagus pot (tall, narrow, with a removable basket) is a worthwhile investment for the season. White asparagus with soft-poached eggs and mousseline sauce is the Loire’s answer to eggs Benedict. Pair with a Vouvray sec or Sancerre blanc — the Chenin or Sauvignon’s acidity matches the asparagus’s sweetness.
Not peeling (outer fibers are tough and bitter). Boiling flat (tips overcook before bases are done). Overcooking (should be tender with slight firmness, never limp). Serving hot from the pot (should rest 5 minutes, served warm). Using old asparagus (freshness is critical — same-day harvest ideal). Treating like green asparagus (different cooking time and approach).
La Cuisine Tourangelle — Emile Couet; Les Légumes du Val de Loire