Ingredients
- Light rum1.5 oz
- Grapefruit juice3 oz
- Bitters1 dash
How to Make It
- Pour all of the ingredients into an old-fashioned glass almost filled with ice cubes.
- Stir well.

Learn how to make a Monkey Wrench: a alcoholic ordinary drink served in a old-fashioned glass. Full ingredient list with standard measurements and step-by-step instructions.
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