Cooking on Yom Tov

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General Guidelines of Cooking on Yom Tov

  1. It’s permissible to cook on Yom Tov only if one intends to eat the food that’s prepared that day of Yom Tov. However, one may not cook for the next day whether it’s a weekday, Yom Tov, or Shabbat. [1]
  2. Food which wouldn’t have deteriorated by being cooked before Yom Tov should be cooked before Yom Tov. However, if one forgot, one may cook on Yom Tov but should do so with a variation from the regular method. [2] Additionally, if it was physically impossible to cook before Yom Tov, or guests came on Yom Tov one may cook without a variation. [3] Nonetheless, water may be heated up on Yom Tov even without a variation. [4]
  3. One may cook a whole pot of meat even if one only needs one piece because the extra meat improves the taste of the whole dish [5] as long as one doesn't say that one is doing for after Shabbat. [6]

Lighting a fire on Yom Tov

  1. It’s permissible to cook on Yom Tov as long as the flame was lit before Yom Tov or the timer was set for it to begin operating on Yom Tov. [7]
  2. It is forbidden to turn on an electric stove on Yom Tov.[8]
  3. One may not raise or lower the temperature of an electric stove. [9]
  4. On Yom Tov, an oven which is thermostatically controlled, is permitted to be opened and closed in order to put in, check, or remove food. [10]

Extinguishing a Fire

  1. If a food is burning and in order to cook it one needs a lower flame, some permit lowering the flame[11], while others say that one should light a new flame which is smaller and not extinguish the other one.[12]

Sources

  1. ↑ Shulchan Aruch 503:1, Shemirat Shabbat KeHilchata 2:1
  2. ↑ Rama 495:1, Mishna Brurah 495:8 and 10
  3. ↑ Shemirat Shabbat KeHilchata 2:2
  4. ↑ Shemirat Shabbat Kehilchata (chap 2 note 6)
  5. ↑ Shulchan Aruch 503:1, Mishna Brurah 503:5
  6. ↑ Mishna Brurah 503:6
  7. ↑ Shemirat Shabbat KeHilchata 1:27
  8. ↑ Igrot Moshe 1:115
  9. ↑ Shemirat Shabbat KeHilchata 1:27 because in doing so you'll usually be extinguishing one coil and heating up another in its place.
    • How do electric stoves work? This writeup is only a beginning and needs more research:
    • Some electric stoves have discrete temperature options such as low, medium, and high. In those stoves, depending on the temperature setting that it is on, a particular circuit is connected and used to heat up the stove to that temperature. When a temperature is adjusted, the circuit that was previously connected is disconnected and a new circuit is connected. In such cases, adjusting the temperature on Yom Tov is forbidden since connecting and disconnecting circuits is an issue of electricity on Yom Tov and if the metal is red hot then additionally it involves igniting a fire and extinguishing it. Sources: Shemirat Shabbat KeHilchata 1:33, Rabbi Meir Sendor.
    • Some electric stoves use a variable temperature and the temperature depends on the voltage going through the circuit, which is adjusting depending on the temperature setting. There is one caveat; the circuit isn't continuously connected. Rather it alternates between being connected and disconnected depending on whether the heating element is at the desired temperature. When the heating element is below the right temperature, the circuit is closed in order to heat up and when it is at the right temperature, the circuit is disconnected for some time. The issue is that if one raises the temperature when the circuit is disconnected, one will cause the circuit to close immediately and if one lowers the temperature when the circuit is closed one will cause the circuit to open immediately. Sources: http://cooking.stackexchange.com/questions/12666/do-all-modern-electric-stoves-have-binary-heating-elements, https://www.youtube.com/watch?v=BxzBG-xLV6Q, https://www.youtube.com/watch?v=NOdYp8CFjdU, http://cooking.stackexchange.com/questions/21432/what-temperatures-do-low-medium-high-on-the-stove-correspond-to, and the Star-K.
  10. ↑ Shemirat Shabbat KeHilchata 1:30
  11. ↑ Igrot Moshe 1:115, 1:150
  12. ↑ Mishna Brurah 514:6
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