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Beer Rap

Dear Matt:

In my college days it was "common knowledge" that a sharp rap on a cold beer would "reinfuse" the carbonation and prevent the foam and spray when the can was opened. Any truth to this? Will the rap somehow return that can toward the condition of a similar but unagitated can?

Dennis, Ocean Beach

Here's another public service announcement in my continuing campaign to wipe out common knowledge, proven to be the cause of 40 percent of today's mayhem and gum disease. Nothing you can do will moosh carbonation back into a brew. Bubbly beverages are very unstable, and carbonation wants only one thing: freedom. Any jostle, tap, thump, rattle, tip, spill, or shake gives it the excuse it needs. Unopened, the can contains enough pressure to keep the carbon dioxide trapped in suspension. Pop the top and it's all liberated. That rap with the class ring soothed only the rapper, not the rappee.

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Dear Matt:

In my college days it was "common knowledge" that a sharp rap on a cold beer would "reinfuse" the carbonation and prevent the foam and spray when the can was opened. Any truth to this? Will the rap somehow return that can toward the condition of a similar but unagitated can?

Dennis, Ocean Beach

Here's another public service announcement in my continuing campaign to wipe out common knowledge, proven to be the cause of 40 percent of today's mayhem and gum disease. Nothing you can do will moosh carbonation back into a brew. Bubbly beverages are very unstable, and carbonation wants only one thing: freedom. Any jostle, tap, thump, rattle, tip, spill, or shake gives it the excuse it needs. Unopened, the can contains enough pressure to keep the carbon dioxide trapped in suspension. Pop the top and it's all liberated. That rap with the class ring soothed only the rapper, not the rappee.

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4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs
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