The Citrus Fizz Starts With a Cordial, Not a Spoonful of Marmalade

A flute with orange zest looks wonderfully simple. Seedlip's Citrus Fizz is simple to assemble after one ingredient has been prepared. The recipe calls for 1 oz marmalade cordial, not 1 oz orange marmalade straight from the jar. Its footnote gives the actual cordial method: combine 300 g marmalade with 150 ml hot water, fine-strain, bottle and refrigerate. That is a small kitchen project hidden inside a three-line drink.

The useful work is to put the published steps in the right order, calculate the named liquid measures and mark the quantities Seedlip does not disclose.

Make the cordial decision before counting glasses

The published glass starts with 1¾ oz Seedlip Grove 42 and 1 oz marmalade cordial. Stir those with ice, strain into a Champagne flute, then top with cold sparkling water and add orange zest. The measured ingredients total 2¾ oz before the sparkling-water top. The final pour cannot be calculated from the page because “top” is not a volume and the glass's usable capacity is not stated.

Seedlip's cordial instructions use grams for marmalade and milliliters for water. They do not claim that 300 g plus 150 ml yields 450 ml of finished cordial. Fine-straining removes some material; the amount left in the strainer is unspecified. Nor does the page state how many one-ounce cordial portions the batch supplies. Dividing 450 by 30 would look precise and be wrong: grams and milliliters are not the same input unit, and the final yield is unmeasured.

That distinction changes the shopping list. You need Grove 42, marmalade, cold sparkling water, orange for zest, ice and a fine strainer or fine-straining setup. You also need a bottle or clean container for the cordial. The recipe says to store the prepared cordial in the fridge, but gives no holding period. A make-ahead date cannot be derived from this card. Follow the ingredient package's handling instructions and suitable food-safety guidance rather than inventing a shelf life.

The source itself does not state which marmalade brand or sugar formulation was used. A different jar may have a different ingredient list; we cannot promise an identical finished drink. Similarly, Seedlip's “sparkling water: top” leaves the mixer purchase dependent on the number of glasses and your serving size. For six drinks, the measured Grove 42 need is 10½ oz, the measured cordial need is 6 oz, and the sparkling water remains a separate, unspecified amount. That arithmetic is a planning example based on six repeats of the published glass, not a producer-published pitcher.

Before promising six, check the cordial you actually strained against that 6 oz requirement. If the prepared amount is smaller, the recipe card gives no reliable conversion from another spoonful of marmalade to another finished ounce of cordial. This is a useful place to pause, measure what you have, and decide whether a second preparation is needed. Keep the sparkling water unopened until the glasses are ready to receive the source's final top.

This is the point of a source-based recipe note: the attractive final glass is only the last step. Put the cordial first on the prep plan, and do not turn missing yield and topper numbers into confident bottle counts. If you want no straining or advance preparation, choose a different published recipe rather than quietly turning this one into marmalade-in-a-glass.