Marshawn Lynch has a new secret ingredient to Beast Mode. It is not a performance-enhancing drug, but it is pretty darn close.

Starbucks.

The Seahawks running back put on a green test apron and went to work in the test lab of Starbucks' Seattle headquarters. The same way he mashes defenders, Lynch mixed a series of ingredients to find a taste of his liking.

Starbucks says Lynch found the basis for his signature Frappuccino -- Beast Mode -- when he tasted a double chocolate Frappuccino with protein powder and raspberry drizzle.

In the end, Lynch and Starbucks decided on a double mocha Frappuccino with a hint of mint and cream and "just enough protein powder to unleash your inner Beast Mode." The drink is topped with whipped cream, a purple berry drizzle and a sprinkle of mocha.

Marshawn Lynch Frappuccino

"I'm all 'bout that," Lynch says. "I'd drink this before a workout. You could get your buff on with this."

Beast Mode will be sold in Washington state and Oakland, Lynch's hometown, starting Oct. 22 through the football season. A portion of the proceeds with go toward the Fam 1st Family Foundation, an organization co-founded by Lynch and Buffalo Bills quarterback Joshua Johnson, Lynch's cousin and also an Oakland native.

Starbucks will donate 24 cents (Lynch wears No. 24) to the Fam 1st Family Foundation for every Beast Mode sold, up to $100,000. The company will start with a $24,000 contribution. The Fam 1st Family Foundation, created in 2011, helps mentor underprivileged youth on the importance of education, literacy and self-esteem. It also hosts free summer football camps and talent shows, collects back-to-school supplies and donates food and toys to those in need during the holiday season.

"It is so important to Josh and me that these kids are able to excel in school and life against all odds," Lynch says.

Beast Mode Frappuccino

The Seahawks could use a little energy boost. The two-time defending NFC champions are 2-4 with a Thursday night trip to the rival 49ers. And Frappuccinos are a proven motivator: As a teen, Ronda Rousey used to beat up dudes for money to buy them.

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