Excited by OSU? We understand you may have some questions! Find our most frequently asked questions surrounding Apple Cider Vinegar and our order process:

Apple Cider Vinegar

OSU is an apple cider vinegar blended with apple juice, crafted using our company’s 200 years of Japanese fermentation expertise. A natural and unpasteurised product, our vinegar includes ‘The Mother’, which are the strands of protein present within raw apple cider vinegar as a result of the fermentation process. OSU is blended with the juice of real apples to balance the tang of the vinegar with the natural sweetness of apples.

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’ is a complex structure of beneficial acids found in unfiltered, unrefined apple cider vinegar.

Yes, OSU is an unpasteurised 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 for maintaining overall well-being. To drink, dilute to taste with still, sparkling or warm water. We recommend that you 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.

It is recommended that you take one tablespoon or 20ml OSU Apple Cider Vinegar, always diluted with water as part of your daily routine.

Apple cider vinegar is low in calories and a popular ingredient in many diets such as the keto diet, the low carb diet and the Mediterranean diet. OSU apple cider vinegar is also suitable for Vegans.

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, as part of Japanese culture, there is a general perception that daily consumption of acetic acid, ideally by drinking Apple Cider Vinegar, is good for general wellness. To investigate this further, the Mizkan Corporation, Japan, has proactively conducted a study on the perceived benefits of ACV. For the results, please click here.

It is recommended that you continue the use of apple cider vinegar for a few months to fully benefit. In Japan taking vinegar daily is a habit that has been handed down from one generation to another for centuries.

Visit our product page to buy OSU online and see our list of current stockists.

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


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