Ok..here's a few things a few turns later, and in between:
I grew Berlin to Size 6 , and now I want to show you something about maxxing whip OF. But first, I want to make one thing very clear - whipping workers and settler is just as much about speed than OF or maxxing OF. In other words, you whip them as soon as you can to get them out fast - there is usually some bits of OF regardless. But for this purpose I wanted to show you how you can max OF, and I want you to try it.
First, here is Berlin at Size 6. I put 3 turns into the Settler to get it to 36H out of 100H production cost. For a 3 pop whip, you need to put <40 hammers into the settler. The closer to 40 hammers the more OF. 39H into settler is the max before it becomes a 2 pop whip.
Each citizen = 30H, so a 3 pop whip is 3X30=90H instantly from whipping 3 citizens. Obviously then, a 2pop whip = 60H
100-60=40H, so 40H into a settler the threshold where it becomes a 2pop whip. Less than 40H and you need that 3rd citizen whipped to complete. (3pop settlers are extremely efficient whips if you have a gran and the growth potential)
Here is Berlin before the whip:
See that I hover the mouse cursor over the production bar so you can see I put 36H into the settler. It's not 39H but it is more than good enough. I will 3pop whip it.
Math:
100-36H = 64H - remaining cost of production for settler
90H(whip) - 64H = 26H overflow directly from whip of settler
Here is Berlin after whip (same turn):
Note again the production bar tool tip. You see production is at 126H/100H for the settler. Hey! The math worked!
Also, note that I made sure the city is working best tiles at size 3. The gov does not always do that after a whip.
So I would expect 26H OF? Well, maybe it will be more than that because you need to factor in the base hammers (11H from

and

) of the city going into the settler this turn. I think the OF will actually be quite a bit more.
Here is Berlin the next turn:
As you can see here, I hover over the area just left of the production bar that shows a city's base production and any OF. The tooltip shows 37H! Nice! That is actually the base whip OF + the base hammers. (
edit: clarification - base hammers refers to those 11H that the city put into the settler last turn - the full OF is from the activity from the previous turn)
So that is how you turn food into production.
I plan to put that into a new worker.
Lastly, here is a couple of turns later showing the 5 city empire (save attached):
I adjusted cities a bit during these two turns. Clam city was just settled.
A turn ago I gave Munich Berlin's FP for more growth as it just grew, while not impacting timing of Berlin's worker.
Clam city (Frank) took the pigs this turn actually, as again it did not impact Berlin's worker timing ..and well, Berlin is not growing anyway while building a worker. This gives Frank a quick boost of growth ...at least for a turn. These are little micro things you can do when sharing tiles.
I had preroaded Frank, then moved that worker back to forest to chop for WB.
Meanwhile, Ham's worker had worked his way to Cologne to chop for that wb, after it finished cottaging Ham's FP. (I acually put 1t into road and 1t into cottage on the way to the forest, but you don't necessarily need to do that..but 1 chop does not complete a WB, so it needs some production in Cologne anyway).
I had put OF from Gran whip in Munich into new settler, back to growth on Library, then put that last chop into settler, back to growth. That settler has 53H so can be 2popped at size 4 later.
I will probably 2pop another worker in Munich at size 5, as more cannot hurt so these cities start working more improved tiles.
Next turn Berlin worker will put 1t road 1SE of Berlin, then finish cottage 1E of there on river grass tiles shared by Berlin and Ham.
Cologne needs 2 tiles roaded only. 1 tile can be the one the worker stands on currently chopping WB that connects city to river. The other can be that tile we just preroad 1SE of Berlin that connects Berlin to the same river. But that road can be timed later when those workers are ready (chop and cottage)...probably finishing the 2 roads simultaneously.
whew!
edit: lastly, I open borders with Joao and Asoka immediately after Writing since they have no WE. Monty is rather disliked at the moment so I'll ignore him for now. Monty does not like Mansa so I will not ob with him for now...I think Mansa is farther away than most here so no prob except the diplo boost. Better than having to stop trade demands. But things with WE can change over time, so keep an eye on that.