how many grams in a teaspoon of lemon juice?

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things people ask

• How much is a teaspoon of lemon juice in grams?
  About 4.67 g for a level teaspoon, or roughly 5 ml. That's the amount that comes off a single squeeze of a lemon wedge into a glass of tea or a bowl of soup — so when a recipe says 'a squeeze of lemon,' a teaspoon is a fair starting estimate. Add a second if it still tastes flat.
• Why do recipes call for a teaspoon of lemon juice in baking?
  Small amounts of lemon juice activate baking soda, prevent sugar from crystallizing in caramels and frostings, and stop cut apples or pears from browning. A teaspoon is enough to do the chemistry without making the result taste lemony — you're using the acid, not the flavor. Fresh and bottled both work since the volatiles don't matter at this scale.
• Can I use bottled lemon juice by the teaspoon?
  For acid-as-tool uses — activating baking soda, stabilizing whipped egg whites, browning prevention — bottled is fine and arguably more consistent than fresh, since the citric acid level is standardized. For finishing a dish or seasoning an aioli where you actually taste the lemon, use fresh; one teaspoon of bottled in a finished sauce reads as dull where fresh reads as bright.

related conversions

• Lemon Juice: cups to grams
• Lemon Juice: tablespoons to grams
• Lemon Juice guide