What Happens Inside the Microwave: the Giant Sour Patch Kids Melting Experiment

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Can you melt Sour Patch Kids in a double boiler instead of a microwave?
A double boiler provides far more temperature control than a microwave, preventing hot spots and keeping the mass below 212°F (100°C). Even then, the modified cornstarch inside the candy will not melt into a pourable liquid; it forms a thick, sticky paste that resists smooth remolding.

Why did my melted candy turn dark brown and smell like vinegar?
The dark color indicates sugar caramelization and scorching caused by prolonged heat. The sharp vinegar-like smell occurs because the citric and tartaric acids in the sour coating degrade under extreme heat, releasing volatile organic acid vapors into the air.

Is there any way to make a functional giant sour gummy at home?
Yes, but not by remelting commercial candy. The reliable approach involves making a gelatin base from scratch using unflavored gelatin, water, fruit flavoring, and sugar syrup. Once the giant gummy cures and sets in its mold, you brush the exterior with a damp cloth and roll it in a blend of granulated sugar and citric acid.