Is branded or supermarket own mayo better? I taste tasted a handful to make up my own mind - here's what I thought.

Mayonnaise number 3 - £2.20 for a 359g bottle I then tried Heinz mayonnaise, which was on offer with a Nectar card, so the £2.20 bottle cost £1.10 instead.

Heinz Real Mayonnaise has a small share of the global market, according to the research firm Euromonitor. For some consumers, such cuts can be jarring.

Mayonnaise number 3 - £2.20 for a 359g bottle I then tried Heinz mayonnaise, which was on offer with a Nectar card, so the £2.20 bottle cost £1.10 instead.

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