Who is each mixer for?

Picnickers avoiding sugar and sweeteners

Plain soda water offers a short ingredient list without listed sugar or sweeteners in the Fentimans, Schweppes and Sainsbury’s examples. Check the particular bottle if both exclusions matter to you.

People who want tonic flavour

Tesco Low Calorie Indian Tonic Water and Schweppes Slimline provide quinine-flavoured options with 0g declared sugars. Both contain sweeteners, so they suit someone comfortable with those ingredients rather than someone seeking an unsweetened mixer.

Shoppers considering a “light” tonic

Check the ingredients before putting a light tonic in the picnic bag. Fever-Tree Refreshingly Light Indian Tonic lists fructose, while Fentimans Naturally Light Tonic lists sugar; neither is an automatic choice when avoiding added sugar.

What should you check before buying?

Start with whether you want unsweetened soda water or tonic flavour, then check the exact recipe and whether the pack size works for serving and storing it.

Priority What to check Your needs
Sugar wording Read the ingredient list for sugar or fructose, then compare the declared sugars per 100ml. Fever-Tree Refreshingly Light lists fructose; Fentimans Naturally Light lists sugar and 3.4g sugars per 100ml. I want to avoid added sugar, not simply choose a drink described as “light”.
Flavour and sweeteners Check for quinine flavouring if you want tonic. Tesco Low Calorie Indian Tonic Water lists acesulfame K and sucralose; Schweppes Slimline lists aspartame. The cited plain soda waters have no sweeteners listed. For a tonic-style drink, I’m happy to choose a sweetened product with 0g declared sugars. If I want neither sugar nor sweeteners listed, I’d choose plain soda water instead.
Pack and storage Compare individual portions with a 1L sharing bottle. Tesco’s 1L tonic and Sainsbury’s 1L soda water both say to refrigerate after opening and use within 3 days. A smaller portion may be easier if only a few drinks are needed. For a group, I can open a sharing bottle when serving and refrigerate what remains.

Picnic mixer mistakes to avoid

  • Assuming “light” means no added sugar

    Fever-Tree Refreshingly Light Indian Tonic lists fructose, and Fentimans Naturally Light Tonic lists sugar and 3.4g sugars per 100ml.

    If avoiding added sugar matters, inspect the ingredients instead of choosing by “light” wording alone.

  • Treating zero-sugar tonic as sweetener-free

    Tesco Low Calorie Indian Tonic Water and Schweppes Slimline list 0g sugars but contain sweeteners. That is a different ingredient choice from the cited plain soda waters.

    Decide whether you want tonic’s quinine flavour, an ingredient list without sweeteners, or both before selecting a variety.

  • Opening a sharing bottle too early

    The product information for Tesco’s 1L tonic and Sainsbury’s 1L soda water directs you to refrigerate them after opening and use them within 3 days.

    Open a large bottle when serving and make sure any remainder can be refrigerated afterwards.

Brand and product-line references

Recipes differ even within a brand’s mixer range, so use the exact variety and its ingredient list to make the choice.

Fever-Tree

Its mixer range includes both soda water and Refreshingly Light Indian Tonic.

  • Premium Soda Water lists carbonated spring water, sea salt and sodium bicarbonate.
  • Refreshingly Light Indian Tonic contains fructose, according to Fever-Tree, so its “light” name should not stand in for an ingredient check.

Schweppes

Its soda water and Slimline Tonic offer different choices on flavour and sweeteners.

  • Coca-Cola Great Britain lists carbonated water and sodium bicarbonate for Schweppes Soda Water, with 0g sugars per 100ml.
  • Schweppes Slimline Tonic lists 0g sugars but contains aspartame.

Fentimans

Its Soda Water and Naturally Light Tonic have different sugar profiles.

  • Fentimans lists carbonated water, salt and sodium bicarbonate in its Soda Water, with 0g sugar per 100ml and no artificial sweeteners.
  • Naturally Light Tonic lists sugar and 3.4g sugars per 100ml.

Tesco

Its Low Calorie Indian Tonic Water is a 1L tonic option for sharing.

  • The product lists 0g sugars and quinine-containing flavourings.
  • It contains acesulfame K and sucralose; Tesco directs shoppers to refrigerate it after opening and consume it within 3 days.

Sainsbury’s

Its 1L Soda Water is a plain mixer in a sharing bottle.

  • The listed ingredients are carbonated water and sodium hydrogen carbonate, with sugars below 0.5g per 100ml.
  • The product directions say to refrigerate after opening and use within 3 days.

Britvic

Britvic announced classic and zero-sugar Indian Tonic Water in 330ml cans in September 2023.

  • Britvic described each 330ml can as providing two serves.
  • For a present-day picnic, check the current can’s ingredients and availability rather than relying on the launch announcement.

Joybuy tonic options

This Schweppes option is for picnic drinks where tonic flavour and 0g declared sugars matter, and sweeteners are acceptable.

Schweppes Slimline Tonic Water 12 x 150ml pack

Schweppes Slimline Tonic Water 12 x 150ml

A smaller-portion tonic option for a picnic when you want quinine flavour without declared sugars and are comfortable with sweeteners. The 12 x 150ml pack lists 0g sugars per 100ml and contains aspartame; it is not a sweetener-free soda water.

Joybuy

Picnic mixer questions

Do “no added sugar” and “sugar-free” mean the same thing?

No. “No added sugar” concerns whether sugars or other foods used for sweetening have been added, while “sugar-free” concerns the amount of sugar in the finished drink. Check both the ingredient list and the sugars figure per 100ml rather than treating the phrases as interchangeable.

Which plain mixer can I take to a picnic without listed sweeteners?

Plain soda water is an option among the cited products: Fentimans, Schweppes and Sainsbury’s list carbonated water with bicarbonate and, for Fentimans, salt, without sweeteners in those ingredient lists. Check the label of the exact bottle you buy.

Can I choose zero-sugar tonic instead of soda water?

Yes, if you want quinine-flavoured tonic and accept sweeteners. Tesco Low Calorie Indian Tonic Water lists 0g sugars with acesulfame K and sucralose; Schweppes Slimline lists 0g sugars with aspartame.

Is “light” tonic a dependable no-added-sugar choice?

No: the named examples need an ingredient check. Fever-Tree Refreshingly Light Indian Tonic lists fructose, and Fentimans Naturally Light Tonic lists sugar and 3.4g sugars per 100ml.

What should I do with an opened 1L mixer after a picnic?

Refrigerate it and follow its label’s use-by-after-opening directions. Tesco’s 1L low-calorie tonic and Sainsbury’s 1L soda water both direct consumers to refrigerate after opening and use within 3 days.