There once was a time when it was impossible to make your own carbonated beverages, but now it's commonplace. But which machine works best?

The Ninja Thirsti is suitable for both hot and cold drinks and comes in two sizes - 530ml and 700ml. It's available in a variety of stylish colours, including classic white, grey and black ...

The American kitchen tech brand, known for its range of innovative and cost-cutting air fryers, launched its Ninja Thirsti Travel Bottle last summer and it quickly became a hit with fans of the brand.