Overall score includes:

• Performance (60%)
• Ease of use (40%)

We tested performance by making a green smoothie and frozen fruit smoothie – as well as blending kale and crushing ice. Our green smoothie was made with cucumber, celery, kiwifruit, pear, spinach, mint and water.

Ease of use was based on how small you had to cut the food before putting it in the cups, how easy it was to pour and drink from the cup, and whether it was easy to travel with the cup. We also looked at assembling and disassembling the parts, how easy the controls were to use and how easy it was to clean.

We also measured the noise on the highest setting. This does not contribute to the overall score.