Sourdough Workshop RSVP Website: Starter Counts, an Oven Cap, and a Proof Line

A sourdough workshop breaks when six oven slots are reserved and twelve people arrive expecting a starter jar, or when the flour order was built for six and three of those names were still a maybe on Friday. Starter jars, the oven slot each baker uses, and the proof window you will actually stop at are set before the first fold. The host does not open a seventh jar because a neighbor decided to bake after the sheet closed. This is wild-yeast starter and timed loaf proofing, not a yeasted bread-baking class that skips the feed schedule. A maybe does not hold a starter jar.

You can create a sourdough workshop RSVP that fills the oven slots you will actually heat, records who is baking and who is only watching, and stops when those seats are full.

Count the bakers the oven slots can hold

Walk the kitchen before you send the link. Write down how many oven shelves or dutch-oven spots you can run in one bake, how many active starter jars are already fed and ready to share, and whether a spare jar is a backup for a dead culture or a seventh baker. If six oven slots can each take one loaf, that number is your cap: six bakers, not a crowd sharing one starter and one peel.

A sourdough station is one starter share, one dough tub, and one named oven slot. You feed the starter on a clock, mix, fold on a schedule, proof to a marked window, and bake when the loaf is ready—not when a guest "has a few more minutes." There is no instant-yeast packet that skips the feed, no shared banneton that becomes someone else's crumb, and no open counter that turns into a second bake. Ask whether a person who will not bake can watch from a chair away from the hot oven, and whether that person still counts toward the number the kitchen can hold. Pick one rule and write it on the page. Watchers stay off the dough. They do not scoop starter "for one loaf" or start a second tub just to see the rise.

Ask the last time you can change the flour and starter count without paying for bags you cannot return. If the starter must be divided on Thursday for a Saturday bake, that Thursday is your lock. Write the finish too: one jar share, one named baker, loaves pulled when the bake window you named is done. A seventh slot "if the second oven warms up" is not a plan.

Set a capacity limit on baking seats, not on everyone who was invited to smell the crust. When the sixth seat is taken, the form should say the workshop is full. If the jars are already portioned, a late baker is not in these oven slots.

The proof line is a clock, not a vibe

Name the bake window you will finish and stop there. A clear line is one loaf, a set proof time, and a stop at "scored, baked through the named window, and cooled on the rack," not an open kitchen until every leftover scrap of dough is shaped. Baking until the starter jar is empty is a different workshop, and you will not finish it in this block of time. A bread-baking class that uses commercial yeast and skips starter feeds is a different party. So is a pretzel night, with lye dips and soft twists on a sheet pan.

Put that proof window on the form as the point you will stop, not a vague "until it looks bubbly enough." If the class ends when the loaf is out and the oven is cool enough to leave, that is the line. People who want to keep folding until the dough "feels right" will still be shaping when the room has to close. You need a yes to this jar, this oven slot, and this proof line before you hand out starter.

Who eats what, and who shares a household seats

Workshops go wrong when the loaf is a surprise for someone's diet. Sourdough means flour, water, salt, and a live culture that may sit near other kitchen allergens. Ask whether someone needs a gluten-free observation seat instead of a dough tub, or whether a household wants two bakers sharing one oven slot. A guest who cannot eat the loaf does not get assigned a jar they will abandon halfway.

Collect dietary restrictions with severity so you know who needs a clear counter away from wheat dust and who is only noting a preference. Use household RSVPs when two people from one kitchen share a starter share or one carpool. Write what happens if someone misses the feed start: their jar goes to a standby already in the room, or it stays on the shelf and the late guest does not begin a second dough.

The moment the jars are locked

The meeting point is the kitchen you named, not "the bakery" with no oven marked. Put your phone on the page. A message in the group chat is not a jar assignment. You match names to starter shares.

Tie the deadline to the feed schedule, the day the baker count cannot change. After that, a late yes is a call about a cancellation, not a promise of another jar. If you want names ready when a baker drops, keep them as standbys and tell them they do not have starter until you write back. A maybe does not hold a starter jar.

Export the list the morning you lock: attending or not, which oven slot, dietary note, household note, and phone. A sourdough RSVP is finished when every oven slot has one named baker, the proof line is the window you will actually stop at, and a late guest knows whether they are baking or watching from the chair.