How Do You Soften Hardened Granulated Sugar?

The most practical way to soften hardened granulated sugar is to add a moisture source to the container for a few hours: a well-wrung damp paper towel or 1 slice of fresh bread, sealed inside the jar, lets the sugar draw moisture from the air and flow freely again. Anyone in a hurry can microwave the sugar in short bursts and break it up with a fork; it's faster, but risks slightly melting the edges. Why does granulated sugar turn rock hard? Sugar is hygroscopic, meaning it readily absorbs moisture from the air. Opening the jar often, a humid kitchen, or keeping the sugar near a warm stove all leave a thin film of moisture on the crystal surfaces. Once that moisture evaporates, the sugar molecules stick together and eventually fuse into a single solid block. The problem usually gets worse when the lid doesn't seal properly or the container is a cardboard box rather than glass; cardboard doesn't hold moisture back and speeds up the exchange between the sugar and the outside air. How to quickly soften hardened sugar The most common fix is to place a well-wrung damp paper towel or a slice of bread inside the container, seal the lid, and wait 8 to 12 hours; by then the sugar has absorbed enough moisture for the crystals to separate again. Remove the bread or towel before it starts to mold, or the sugar will pick up its smell. For a faster fix, put the sugar block in a bag and crush it with a rolling pin or mallet; passing the broken pieces through a sieve gives you fine grains ready for a recipe. Microwaving in 10-second bursts also works, but once the sugar starts to melt and caramelize there's no going back. Does the same trick work for powdered sugar and sweeteners? Powdered sugar contains starch, so the moisture trick backfires — a damp towel clumps it further instead of loosening it. The right fix for clumped powdered sugar is to pass it through a fine sieve, which aerates it and breaks the lumps apart. Granulated sweetener tablets or powders are also affected by moisture, but unlike sugar they are usually less sticky; dropping a food-safe silica gel packet into the container is a safer fix than the damp-towel method. How to stop it hardening again Storing sugar in a glass or plastic container with an airtight lid cuts down moisture exchange far more than a cardboard box does. Keeping the container away from the steam thrown off by a stove or dishwasher also slows down how fast the crystals pick up moisture. Dropping a few dry grains of rice or a food-safe desiccant packet into the container noticeably delays hardening in sugar tins that stay open for long stretches. Do sugar cubes and brown sugar harden the same way? Sugar cubes are already pressed into shape when sold, so they don't harden as dramatically as granulated sugar; but left somewhere humid for a long time, the cubes can still fuse into one solid lump. The same moisture trick works here too: a damp paper towel left in the container briefly is enough to separate the cubes again. Brown sugar has the opposite problem: instead of absorbing moisture, it dries out and turns rock hard, because its softness comes from the moisture in its molasses content. That's why placing a slice of bread or a damp towel in the container restores the lost moisture, serving the reverse purpose of what it does for granulated sugar.