New York Cheesecake

The water bath 13 recipes

• The water stands two thirds of the way up the side of the inner dish and is still standing there at the end: filled only to the halfway mark, the upper band sets hard and pale long before the centre moves, and water lapping the rim or splashed over the top has thinned the surface into a loose, watery skin.
• The bath is silent, steaming, with at most one slow bubble rising at the wall of the outer vessel, held between 80C and 85C (176F and 185F). Any chatter of the dish against the base, any steady string of bubbles, any rolling of the surface means the water has run to 100C (212F) and the damage is already done.
• Nudged, the centre trembles as one piece, a coin of movement in a face that is otherwise still. A ripple that travels outward in waves means it is still liquid beneath the skin; a face that does not move at all has been carried past the set and will eat firm and grainy.
• Cut, the face is dense and glossy from edge to edge: no honeycomb of small bubbles along the outer band, and no bead of clear liquid weeping from the cut or pooling between the set and the side of the dish, which is the mark of protein wrung out by heat.
• It left the water before it was done and rested clear of it: the centre reads 78C (172F) as it is lifted out and climbs to roughly 82C (180F) standing. Anything left sitting in the hot bath after the heat was cut has gone on cooking, and it reaches the pass tight and split however well it looked when it went in.

Where it goes wrong The bath was pushed too hot and allowed to boil, usually an outer vessel set over direct heat that was never turned down, or a bath topped up part way through with boiling water, so the mixture against the wall of the dish ran past 85C (185F) and its protein seized and squeezed out its liquid. The outer band is pitted and grainy, a ring of watery liquid weeps into the dish as soon as it is cut, and the centre is still slack, because the outside was overcooked long before the middle set.

The overnight rest: letting a dish marry 29 recipes

• Cooled quickly before it went in (spread out, decanted, or stood in cold water) rather than carried to the fridge hot in the pot it was cooked in.
• Protected from the rest of the fridge once cold: covered, or given space where nothing strong is sitting beside it. A rest this long is long enough to take on whatever it shares the shelf with, and some dishes want the open air.
• Given the whole time. This is the one technique whose entire content is waiting, and cutting it short leaves the dish exactly as it was when it went in.
• Brought back deliberately: reheated gently, or brought up to the temperature it is meant to be eaten at, rather than served straight out of the cold because it is late.
• Tasted and corrected AFTER the rest. Seasoning and brightness both flatten in the cold, so the dish is finished at the end of the wait rather than at the start of it.

Where it goes wrong It went into the fridge hot and covered. It held its own heat for hours in the range where food spoils, and the lid sweated and dripped back into it all night: what comes out is duller and wetter than what went in, which is the exact opposite of the point.