Why your tomato is leaking juice all over your cutting board
In short: Cutting a ripe tomato is a delicate operation because the fruit is essentially millions of tiny, fragile water balloons held together by pectin. This video demonstrates how to slice tomatoes properly to prevent bruising and keep their juices inside the fruit rather than on your counter.
A ripe beefsteak tomato is structurally similar to millions of individual plant cells bound by a carbohydrate glue called pectin. Because these cells are full and delicate, applying pressure with a dull blade causes them to rupture, leading to a loss of fluids before the tomato reaches your plate.
The primary requirement for successful tomato preparation is a sharp blade. While a chef's knife or a santoku are preferred, any sharp knife that feels comfortable to the user will suffice to avoid the bruising that occurs when a blade is not sharp enough to slice through the pectin structure cleanly.
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Sources
- Summary by Intellect · source: Knife Skills: Every Way to Cut a Tomato | Kenji's Cooking Show
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