Why is my brewer not brewing?
A minimum of 6oz of water is required to brew. Add an additional 2oz of water to the reservoir to ensure the minimum fill level has been met, then press the brew button. If the issue persists, the exit needle may be clogged and should be cleaned with a straightened paper clip, or the K-Cup pod holder may need cleaning. If you have repeated the descale procedure twice and it still only brews a partial cup, contact Customer Service.
From the official Keurig K-Mini Coffee Maker manual, page 4
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