From the Country of Marin's Nutrition Wellness Program, nutritionist Ellen Szakal taught the class how to read product labels to determine the number of teaspoons of sugar in each serving. A chart listing their favorite snacks and a hands--on exercise counting out a disconcertingly large pile of sugar cubes helped them understand just how much unnecessary sugar they were consuming each day.

It's a skill adults could use, too.

Calculating How Much Sugar Is In A Container
Looking at the Nutrition Facts label on the side of the package, find the number of grams of sugar. Then divide that number by 4. For example, ingesting 65 grams of sugar in a 20-ounce drink bottle (considered 1 serving) means swallowing 17 individual teaspoons of sugar.

Juice Peddler smoothie bike
So much youthful energy, it takes extra hands to hold the jar still.

Berkeley-based Juice Peddler sells kits for retrofitting bikes to become human-powered blenders. From the first-generation's endearingly clunky tricycle platform and antique hand-drill to the fifth-generation's sleek, high-density polyethylene design, the company has been at the forefront of DIY bike blender technology.

The kids took turns pedaling their fruit concoctions and proudly shared tastes of their icy treats with other teams. Lined up for judging, the smoothies created a rainbow of delicious fun: Monkey Melons, Fruit-A-Palooza, Pink Panther, Go Mango, Fruit-A-Licious, and Pink-A-Licous Strawberry.

I'm glad I didn't have to judge, as it would have been a tough call to pick just one winner.

Sammy and Brittney confer on the formulation of their team's smoothie.

Pinkalicious Strawberry Smoothie
The members of Team Pinkalicious decided to celebrate the happy coincidence of their clothing colors with an appropriately hued smoothie.

Serves: 6

Ingredients
10 ounces strawberries, hulled
1 banana, chopped
1 cup frozen berry medley
1/2 cup yogurt
1/4 cup orange mango juice concentrate

Preparation
1. Place all ingredients in the jar of a blender.
2. Blend until completely mixed.
3. Serve immediately.

Minted Strawberry Agua Fresca
Another excellent recipe from Generation Chefs that highlights the current season's bumper crop.

Serves: 6

Ingredients
2 cups ice cubes
3 cups strawberries, hulled
2 small mint leaves, optional
1 1/2 cups cold water
1 1/2 tablespoons fresh lime or lemon juice
3 tablespoons sugar, or to taste
6 whole strawberries, split 3/4 up from the point, for garnish
6 mint sprigs, for garnish

Preparation
1. Place all ingredients in a blender in the order listed.
2. Blend until completely mixed. Taste and adjust for sweetness or tartness as desired.
3. Pour into chilled glasses, garnish with mint sprigs, and slide a berry onto the rim of each glass.

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Smoothies: Youth-Powered Sweetness