Hard Butterscotch Candy

Good 'old-fasioned' hard candy. Prep/cook time is and est. - it can vary with the day due to weather.

Put sugar , corn syrup , water and salt into saucepan.

Stir over low heat until sugar is dissolved.

Increase heat and cook until thermometer registers 250 degrees f , firm ball stage.

Add butter.

Cook with occasional stirring until thermometer registers 300 degrees f.

Remove from stove.

Add vanilla extract.

Pour into buttered shallow pan , making a layer 1 / 4 inch deep.

While warm , crease into squares with a blunt knife.

When cold , break into pieces.

brown sugar, light corn syrup, water, salt, butter, vanilla extract