# The Travellers' Allowances Order 1994, Paragraph 3


(1) Wine that is for the time being in a closed container is sparkling if—
(a) due to the presence of carbon dioxide or any other gas, the pressure in the container, measured at a temperature of 20°C, is not less than 3 bars in excess of atmospheric pressure;
(b) regardless of the pressure in the container, the container has a mushroom-shaped stopper (whether solid or hollow) held in place by a tie or fastening.
(2) Wine that is not for the time being in a closed container is sparkling if it has characteristics similar to those of wine that has been removed from a closed container and that, before removal, fell within sub-paragraph (1)(a).

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Source: https://www.legislation.gov.uk/uksi/1994/955/schedule/1/paragraph/3 (the official version)
Page: https://openlegislation.uk/travellers-allowances-order-1994/schedule-1/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.