Pressure Cooker Cream Infusions

A pressure cooker is the fastest and most thorough way to extract flavour from firm vegetables into dairy. Fibrous aromatics like water chestnut, celery root, sunchoke, or fennel resist giving up their essence to cream at atmospheric pressure; under around 15 psi at roughly 250°F (121°C), the cell walls break down more completely and fat-soluble compounds move into the cream in ten minutes what stove-top infusions take an hour to approximate. The method is simple: sweat your aromatics in butter first, then add the main vegetable, cream, and milk, seal, and cook at high pressure for 10 minutes with a 5-minute natural release. Purée in a high-powered blender on high for a full 2 to 3 minutes, then pass through a fine-mesh sieve. The result is a silkier, more deeply flavoured cream than any stove-top method delivers in the same window. Season only after straining - the concentration of flavour under pressure means less salt is needed than you might expect.