Danke für die ausführliche Antwort. Ich weiß noch nicht, wie Sauermilch unterscheiden soll form Dickmilch, aber es könnte auch nur ein regionales synonym für Dickmilch. Für den Inhalt des fettes, ist es wahrscheinlich auf der Verpackung aufgedruckt, ich habe keine herumsitzen. "Homogenisierte Kuhmilch" sagt nichts über Fett-Inhalte per se, aber Milch und kultivierten Produkte sind in Deutschland normalerweise entweder mit Fett voll oder reduziert Fett (1.5%) Milch, fettarmer Milch und Derivate sind extrem selten. @Cascabel Vielleicht ein dupe? OK, ich ' ll swap nächste mal.

Ich Häufig verwenden die wasserverdrängungs-Methode zur Abdichtung ziploc-Gefrier-Beutel, wenn ich sous-vide. Ich kann vielleicht 99% der Luft aus, aber technisch ist die Tasche nicht unter Vakuum. Wenn ich den clip an der Oberseite der Tasche an der Seite meines container -, Luft-Taschen, die entstehen, sammelt sich an der obersten, und das Fleisch ist völlig in Kontakt mit dem bag und Tauchbad. Alternativ, wenn ich den Beutel mit einer marinade, es sind keine Taschen von Luft zwischen dem Fleisch und dem Tauchbad.

Ich kann mir nicht vorstellen, dass die Temperatur übertragen werden können mehr wirksam, wenn Sie Vakuum versiegelt. Warum hat eine Seite wie SeriousEats noch empfehlen, dass Sie ein Vakuum sealer ist nötig für beste Ergebnisse mit längeren Garzeiten?

update aus http://www.seriouseats.com/2016/08/how-to-seal-food-airtight-without-vacuum-sealer-water-displacement-method.html#comments-299859

Im Rahmen der Lagerung von Lebensmitteln in Kunststoff-Taschen, SeriousEats behauptet, "überschüssige Luft verursacht oxidation, entwickeln sich in fehlaromen oder zu fördern Verderb." Aber ich habe nie sous vide für den Gefrierschrank, es wird serviert, wenn Sie fertig.

Es war ein Kommentar, der fragte, ob die Kontamination der Lebensmittel auftreten, zum Kochen mal länger als 48 Stunden, aber es wurde nie beantwortet.

Was ist die Wissenschaft hinter dieser Aussage? Wie viel Rest-Luft "zu viel"?

Wenn die Tasche eingetaucht bleibt, nicht Auslaufen, und das Essen in vollen Kontakt mit dem Wasser-Bad, ist das genug, duplizieren Sie die Vorteile eines echten Vakuum-Siegel?

update 2

Auch, was die wissenschaftliche Auswirkung von trapping-kleine Mengen an Restluft in einer Tasche über dem Wasserbad? Dies setzt Voraus, dass es immer noch eine sehr starke thermische Kopplung zwischen dem Wasserbad und sous vide Element.

In dem Foto unten, können Sie sehen, mindestens eine 2 cm-Lücke zwischen dem Luftpolster über dem Wasserspiegel und die tatsächliche kurzen rippen. Von einem Hitze-transfer-Perspektive, ich kann mir nicht vorstellen, dass ein Vakuum versiegelten Beutel ausführen kann, deutlich besser—sicherlich nicht im Verhältnis zu einem 48hr zu Kochen Zeit. Gibt es eine Möglichkeit der bakteriellen Kontamination?

sous vide bag with residual air above water bath

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