Excited by OSU? We understand you may have some questions! Find our most frequently asked questions surrounding our order process below.

Please note that we do not sell on our website anymore but we can support on any current order.

Apple Cider Vinegar

OSU is an apple cider vinegar blended with natural fruit juices, crafted using our company’s 200 years' expertise in crafting vinegars in Japan. Natural and unpasteurised, all our vinegars include ‘The Mother’, which are the strands of protein present within raw apple cider vinegar as a result of the fermentation process. Our ACV is blended with the juice of apples and other delicious citruses and berries to balance the tang of the vinegar with the natural sweetness of the fruits.

Apple cider vinegar is made by fermenting apple juice, with the sugars transformed into alcohol. The cider then undergoes a second fermentation where the alcohol is converted to acetic acid. Acetic acid, is a main component of vinegar and is what gives vinegar its sour taste profile.

‘The Mother’ or the ‘mother of vinegar’, are the strands of protein present within raw apple cider vinegar as a result of the fermentation process. It is totally harmless, and you might have noticed it at the bottom of your bottle, which is why you need to give it a good shake!

Yes, OSU is an unfiltered product, therefore includes ‘The Mother’, which are the strands of protein present within the raw apple cider vinegar.

Apple cider vinegar can be used in a variety of ways. Most commonly it is drunk mixed with water as a daily tonic. To drink, dilute to taste with still, sparkling or warm water. We always like to dilute one part (20ml) of OSU with nine parts of water. You can also use apple cider vinegar as a dressing for salads, in marinades or even as an ingredient in cakes! Visit our inspiration page for more uses.

We recommend to dilute apple cider vinegar in water. We dilute 1 part OSU in 9 parts of water but also love it in smoothies!

Yes our apple cider vinegar is suitable for both vegetarians and vegans to include into their diets daily.

No applications have been made to date concerning approved health and nutrition claims for OSU ACV within E.U. However, the Japanese have been consuming vinegar daily for generations, which is what inspired us to create OSU.

Yes all our ACVs are 100% natural!

We use our Japanese craft and centuries old heritage to create the OSU products, but all our ACVs are made in the UK.

Our bottles and caps are fully recyclable, we recommend to keep the cap on the bottle when recycling.

You can order our products on Amazon here, or find our list of current stockists here.


Once your order has shipped, we’ll send you a confirmation email which will have a courier tracking number. If you have trouble or haven't received your products on time, you can contact our friendly delivery team at osu@intervino.co.uk

Given the current climate, you may experience some delays to the delivery of your OSU parcel. We appreciate your patience at this time, and feel free to ring us on +44 1507 601 101 for more information.

We can amend your details and address, you just need to let us know within 2 hours of placing your order. Please contact our friendly Customer Services Team at osu@intervino.co.uk  or call 01507 602101 (our offices are open 9:00am – 5:00pm Monday to Friday).

We accept all major Debit and Credit cards. You can also pay using Paypal.

Unfortunately we are unable to ship internationally and can only deliver within the UK.

If you find an issue with your order please let our friendly Customer Services Team know as soon as possible. You can contact them at osu@intervino.co.uk or call 01507 602101. Please note you will need to provide a photograph of the issue and having received proof of incorrect/damaged or defective products we will either refund you or offer you a replacement.

OSU have engaged Intervino Limited to fulfil all orders placed on www.osuvinegar.co.uk. The terms of use of the website are set out in Schedule 1 of these Terms of Sale Terms & Conditions