Lowest calories per 100 g: 25 foods ranked

Foods ranked by energy per 100 g, lowest first, per USDA FoodData Central. First is Black coffee at 1 kcal per 100 g; the table lists the top 25.

#	Food	kcal per 100 g	kcal	Protein	Carbs	Fat
1	Black coffee Beverages	1	1	0.1 g	0 g	0 g
2	Cucumber, peeled Vegetables	10	10	0.6 g	2.2 g	0.2 g
3	Dill pickle Vegetables	12	12	0.5 g	2 g	0.4 g
4	Cucumber, with peel Vegetables	16	16	0.6 g	3 g	0.2 g
5	Radishes Vegetables	16	16	0.7 g	3.4 g	0.1 g
6	Celery Vegetables	17	17	0.5 g	3.3 g	0.2 g
7	Romaine lettuce Vegetables	17	17	1.2 g	3.2 g	0.3 g
8	Iceberg lettuce Vegetables	17	17	0.7 g	3.4 g	0.1 g
9	Tomato Vegetables	18	18	0.9 g	3.9 g	0.2 g
10	Red radishes Vegetables	20	20	0.7 g	4.1 g	0.1 g
11	Asparagus Vegetables	20	20	2.2 g	3.9 g	0.1 g
12	Broccoli rabe, raw Vegetables	22	22	3.2 g	2.9 g	0.5 g
13	Spinach Vegetables	23	23	2.9 g	3.6 g	0.4 g
14	Broccoli rabe, cooked Vegetables	25	25	3.8 g	3.1 g	0.5 g
15	Cabbage Vegetables	25	25	1.3 g	5.8 g	0.1 g
16	Eggplant Vegetables	26	26	0.9 g	5.4 g	0.1 g
17	Mustard greens Vegetables	27	27	2.9 g	4.7 g	0.4 g
18	Grape tomatoes Vegetables	27	27	0.8 g	5.5 g	0.6 g
19	Cauliflower Vegetables	28	28	1.6 g	4.7 g	0.2 g
20	Broccoli stalks Vegetables	28	28	3 g	5.2 g	0.4 g
21	Green asparagus Vegetables	28	28	1.4 g	5.1 g	0.2 g
22	Lemon, without peel Fruits	29	29	1.1 g	9.3 g	0.3 g
23	Jalapeño pepper Vegetables	29	29	0.9 g	6.5 g	0.4 g
24	Salsa Prepared dishes	29	29	1.4 g	6.7 g	0.2 g
25	Lime Fruits	30	30	0.7 g	11 g	0.2 g