Rockmelons

One of the things I like about fruit is that they’re cheap. Supermarkets have started to illustrate this comparing prices per 100grams. For example, processed food is usually more than $1 per 100grams. (eg If you got a 50 gram chocolate bar for 50 cents, you’d be doing well.)

But fruit and vegetables are far cheaper. Apples are usually 30c per 100 grams. Potatoes are 25c per 100g. Even expensive fruit, like mangoes at $7.99 per kilo are actually only 79c per 100 grams.

But today, rockmelons have topped the lot. Coles in Kings Cross were selling them for $1.99 each. And I reckon each rockmelon must have weighed around 4 kg each, which would mean they are 5 cents per 100 grams.

This is phenomenal news when you’re on a budget, like me. A vege burrito can fill you up for $10. But a half a melon can do the same job for $1.

But it’s got me thinking about something else. Rockmelons can fill you up pretty quickly, but because they are mostly water, you don’t stay full for that long. On the other hand, some foods can stop hunger for 5 or 6 hours. It would be interesting if there were a “Satiety-per-dollar” index. This would be particularly useful in the third world, where people have to really think carefully about what’s the best food to spend their money on.

UPDATE: Susannah Holt has already started a satiety index. And potatoes seem to be the most satiating food around.

http://www.mendosa.com/satiety.htm

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2 Responses to “Rockmelons”

  1. Robin Says:

    The fruit breakdowns surprise me, an orange is perceived as more filling than an apple? Seems to go against the fiber logic I always think of?

    • durand26 Says:

      Interesting point. I checked out http://www.nutritiondata.com to find out the comparative stats of apples and oranges. Both have 2 grams of fibre per 100grams of fruit. But oranges have fewer calories per 100 grams (47 calories for oranges, vs 52 calories for apples). So if you’re going to eat a fixed number of calories of each fruit, the oranges would be heavier and have more fibre.

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