Marmite lovers are currently being urged to use their jars "responsibly" as there has been a temporary shortage of the product.
Unilever, which owns the brand, said production of larger jars had to be stopped and they have only been making 250g jars of late, due to a shortage of brewers yeast.
The yeast by-product, which is one of the main ingredients in Marmite, is generated when brewers make beer, but as pubs having been shut for months due to the coronavirus lockdown the supply has been affected.
A spokesperson for the company explained on Twitter, writing: "Due to brewers yeast being in short supply (one of the main ingredients in Marmite) supplies of Marmite have been affected.
"As a temporary measure we have stopped production of all sizes apart from our 250g size jar which is available in most major retailers."
Fans of the yeast spread were pretty distraught about the shortage.
One person said: "I've just turned the news on to hear of a Marmite shortage - just when we thought 2020 couldn't get any worse."
Another branded the situation: "Marmageddon".
A third wrote: "I need Marmite like oxygen and really need more 400g squeezy jars."
"It's every man for himself," added someone else.
But before you head out to stock up on the stuff, it seems that we don't actually need to panic too much.
The official Marmite Twitter account have now posted to say that their full range "will back on the shelves soon."
They added: "In the meantime, please do your bit and use Marmite responsibly. #LoveItOrHateIT #JustDontWasteIt."
A spokeswoman for Unilever also confirmed this, telling the BBC: "We are continuing to make Marmite as normal again, which means that the full range of jars should be back on supermarket shelves very shortly."
Do you have a story to share? We want to hear all about it. Email us at yourmirror@mirror.co.uk
