Per cup, passion fruit pulp at 5.2 g, then guava at 4.2 g. Per 100 g, tamarind leads at 2.8 g and guava is next at 2.55 g. Guava is easier to find and eat in quantity, and it has far fewer calories than passion fruit or tamarind.

None are rich in the way meat, dairy or legumes are. The best fruits (guava, passion fruit, avocado, jackfruit, pomegranate, blackberries, kiwifruit) give 2 to 5 g per serving, against 17 g in a 170 g tub of nonfat Greek yoghurt.

Not in a normal serving. Fresh fruit tops out around 4 to 5 g a cup. To reach 10 g or more, combine fruit with yoghurt, cottage cheese, milk, eggs, nuts or seeds.

Weak per calorie. A cup of cubes has 3.0 g of protein but 240 kcal, mostly fat, or about 1.2 g per 100 kcal. Nonfat Greek yoghurt gives 17 g per 100 kcal.

Per gram, yes, because the water is gone: dried apricots have 3.39 g per 100 g against 1.4 g for fresh. Per serving the gain is small, since you eat far less of it by weight, and calories rise with it.

Among whole foods, a cup of shelled edamame at about 18.5 g, followed by a 170 g pot of non-fat Greek yoghurt at about 17 g and a drained can of light tuna at about 16.5 g.