This tool helps home cooks adjust elderflower cordial recipes to match their desired batch size. It calculates exact ingredient quantities using standard homemade cordial ratios. Ideal for scaling batches for gatherings, gifting, or daily use.
Elderflower Cordial Ratio Calculator
Scale homemade cordial recipes to your exact batch size
Tightly packed fresh heads, adjust for dried flowers
Granulated sugar, reduce for less sweet cordial
Freshly squeezed, ~3 medium lemons per liter
Optional, extends shelf life up to 6 months
Your Batch Ingredients
How to Use This Tool
Start by entering your desired finished cordial yield in the first input field, then select the matching unit of measurement from the dropdown. Next, adjust the per-liter ratio inputs if your preferred recipe uses different amounts of elderflower heads, sugar, lemon juice, or citric acid than the standard defaults. Click the Calculate button to generate exact ingredient quantities for your batch. Use the Reset button to clear all inputs and start over, or the copy button in the results section to save your ingredient list to your clipboard.
Formula and Logic
All calculations start by converting your desired yield to liters, the base unit for ratio calculations. For each ingredient, the tool multiplies your total yield in liters by the per-liter ratio you specified (or the default standard ratio if unchanged). Standard default ratios are based on widely used home elderflower cordial recipes:
- 18 elderflower heads per liter of finished cordial
- 800 grams of granulated sugar per liter
- 150 milliliters of fresh lemon juice per liter
- 30 grams of citric acid per liter (optional for preservation)
Water calculations use a standard ratio of 600 milliliters of boiled, cooled water per liter of finished cordial, accounting for volume added by dissolved sugar and other ingredients.
Practical Notes
Adjust these ratios based on your personal taste and local ingredient availability:
- Use tightly packed elderflower heads picked on a dry morning for the best flavor, and reduce the head count if using very large clusters.
- Swap granulated sugar for caster sugar for faster dissolving, or reduce sugar by up to 20% if you prefer less sweet cordial (note this may shorten shelf life).
- Add lemon zest to the hot water infusion for extra citrus flavor, but do not include zest weight in the lemon juice calculation.
- Citric acid is optional but recommended for shelf stability: cordial without citric acid should be refrigerated and used within 2 weeks, while cordial with citric acid can last up to 6 months in a cool pantry.
- Scale batches up to 10 liters maximum for home use, as larger batches may not infuse evenly.
Why This Tool Is Useful
Homemade elderflower cordial recipes often list ingredients for a single fixed batch size, which is frustrating when you need more for a garden party or less for a small household. This tool eliminates guesswork when scaling recipes, ensuring you never add too much sugar or too few elderflowers. It also lets you customize ratios to match dietary preferences or ingredient availability, saving time and reducing food waste from failed batches.
Frequently Asked Questions
Can I use dried elderflowers instead of fresh?
Yes, but reduce the elderflower head count by 50% as dried flowers are more concentrated. Adjust the per-liter elderflower input to 9 instead of 18 if substituting dried flowers.
How long does homemade elderflower cordial last?
Cordial stored in sterilized glass bottles in the fridge will last 4-6 weeks. Adding the full recommended citric acid and storing in a cool dark pantry extends shelf life to 6 months. Always discard cordial that smells sour or has visible mold.
Can I make this cordial without citric acid?
Yes, but you must refrigerate the cordial immediately and use it within 2 weeks. Citric acid lowers the pH to prevent bacterial growth, so omitting it requires stricter storage conditions.
Additional Guidance
Always sterilize glass bottles before filling them with cordial to prevent spoilage. To sterilize, wash bottles in hot soapy water, then submerge in boiling water for 10 minutes or bake at 140°C for 15 minutes. Let cool completely before filling. For gifting, add a label with the batch date and storage instructions. If your cordial is too sweet, dilute with sparkling water or soda when serving. If it is too tart, add a small amount of simple syrup to taste.