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Fudge Temperature Guide — Soft Ball Stage Explained

Fudge requires cooking sugar syrup to the soft ball stage (235–240°F) and then beating it while it cools — the combination of the precise sugar concentration from temperature and the agitation of beating creates fudge's characteristic smooth, creamy, slightly grainy texture. Too much heat (above 245°F) and the fudge sets too firm; too little (below 232°F) and it never sets properly, remaining soft and sticky. A candy thermometer removes all guesswork from this precision cooking process.

The classic cold-water test for soft ball stage: drop a small amount of hot syrup into cold water. If it forms a soft, pliable ball that flattens when removed from water, you're at soft ball stage (235–240°F). This is the traditional method when candy thermometers weren't common — but a thermometer is significantly more reliable and consistent.

Type a temperature to identify the stage

Complete Candy Temperature Stage Chart

Stage °F °C
Thread 230–235°F 110–112°C
Soft Ball 235–240°F 113–116°C
Firm Ball 245–250°F 118–121°C
Hard Ball 250–265°F 121–130°C
Soft Crack 270–290°F 132–143°C
Hard Crack 300–310°F 149–154°C
Caramel 320–360°F 160–182°C
Burnt Sugar 370+°F 188+°C

Frequently Asked Questions

What temperature is soft ball stage?
Soft ball stage is 235–240°F (113–116°C). When you drop a small amount of syrup into cold water, it forms a soft ball that flattens when removed. Used for fudge, fondant, and pralines.
What temperature is hard crack stage?
Hard crack stage is 300–310°F (149–154°C). Syrup dropped in cold water separates into hard, brittle threads. Used for lollipops, hard candy, toffee, and peanut brittle.
Can I use a meat thermometer for candy making?
Yes — if the thermometer's range includes candy temperatures. The Titan Grillers thermometer measures up to 572°F (300°C), covering all candy stages from thread through hard crack. It reads in 2–3 seconds, making it ideal for catching exact stage temperatures.
Why does altitude affect candy temperatures?
At higher altitudes, water boils at a lower temperature, so sugar syrups reach stages at lower temperatures too. For every 500 feet above sea level, subtract about 1°F from the target temperatures.

Frequently Asked Questions

What temperature do you cook fudge to?
Cook fudge to 235–238°F (soft ball stage). Remove from heat immediately when the thermometer reads your target. Cool to 110°F (touch the bottom of the pan and it should feel warm but not hot) before beating — beating too hot causes fudge to set into a glossy, grainy mass rather than the smooth creamy texture of proper fudge. Beat until the mixture loses its gloss and thickens, then pour quickly into the prepared pan.
Why won't my fudge set?
Fudge that doesn't set: cooked below 232°F (insufficient sugar concentration), too much liquid added, or humidity above 60% (humid air prevents proper sugar concentration). Check your thermometer calibration (ice water test for 32°F accuracy). If fudge is soft: return to the pan, add 2 tablespoons of water, cook to 238°F, and cool/beat again. Prevention: make fudge on low-humidity days and use a calibrated thermometer.
What is soft ball stage in candy making?
Soft ball stage (235–240°F): when a small amount of hot syrup is dropped into cold water, it forms a soft, pliable ball that flattens between your fingers when removed from the water. This is the correct stage for fudge, pralines, and soft fondant. Just below this temperature (thread stage, 230°F), the syrup forms thin threads in water but no ball. Just above (firm ball stage, 245°F), the ball holds its shape more firmly and doesn't flatten easily.

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