twice the amount as or than?

[Xiddling]

I'm going round in circles with a sentence that I need to write. Please can you tell me what you think it should be. I think it should be the first option, but a colleague thinks it's the second:

Bees produce almost twice the amount of honey than they did before
or
Bees produce almost twice the amount of honey as they did before

Neither!

Twice as much honey as they had produced
Or
Twice the amount of honey that they had produced
Or
More honey than they had produced

Could you put the full sentence ?

@LovelyGirlCompetition

Could you put the full sentence ?

The full sentence is: Bees produce almost twice the amount of honey than they did before 2018.

This is not actually the real sentence - I've changed the subjects because it is a private document but it should give you the gist.

@Palavah

Neither!

Twice as much honey as they had produced
Or
Twice the amount of honey that they had produced
Or
More honey than they had produced

Thanks Palavah.

Since 2018, bees have doubled their production of honey.

...almost doubled

I'm still a bit confused though. How about in this instance:
John Lewis produces almost twice the amount of swimsuits than they did before 2011.

Is that wrong?

I would have thought: John Lewis produces almost twice the amount of swimsuits that they did before 2011.

I'm very likely wrong though

Definitely "than". In my humble opinion

Think it should be 'than they did before'

I need to tweak the sentence as little as possible, but 'as' just seems wrong to me.

As is correct. Definitely.

As for
John Lewis produces almost twice the amount of swimsuits than they did before 2011
This should be 'twice the number of swimsuits'.

@Xiddling

I'm still a bit confused though. How about in this instance: John Lewis produces almost twice the amount of swimsuits than they did before 2011.

Is that wrong?

Yes that's wrong.

You could say:
John Lewis produces almost twice the number of swimsuits they did before 2011.

@FlowerArranger

As is correct. Definitely.

As for
John Lewis produces almost twice the amount of swimsuits than they did before 2011
This should be 'twice the number of swimsuits'.

But how about if we don't know how the amount of swimsuits is being measured? eg it could be in weight rather than number or items?

(of items not or items)

@FlowerArranger

As is correct. Definitely.

As for
John Lewis produces almost twice the amount of swimsuits than they did before 2011
This should be 'twice the number of swimsuits'.

as is not correct in the way it's used in the OP.

Neither option is great really
Twice the amount of oils be better
If I had to chose it would be than

As

OP if you're talking about production of several individual things you could count then it's 'number'. If it's production of something you couldn't point to and count then it's amount.

So:
Honey - use 'amount' eg twice the amount of honey
Jars of honey - use 'number' eg twice the number of jars

ah, still confused! Thanks all though :)

"Than" is correct in your example, "as" is not. For "as" to work, you could say "twice as much honey as before"

I'd tweak it to " almost twice the quantity (amount is less formal in register than quantity) of honey than..." Or use the example with "as"

You must need the timescale in your sentence, as in 'bees now produce almost twice the amount of honey than they did before 2018'. That makes sense

There are some rather surprising answers on here. I’m with @Palavah.
‘Than’ is used with comparisons such as ‘more’, ‘less’ and ‘bigger’, as well as in ‘rather than’ and ‘other than’.
Without other tweaks, the sentence is
‘Bees produce almost twice the amount of honey that they did before 2018.’
Or you could drop ‘that’
‘Bees produce almost twice the amount of honey they did before 2018.’

Have they really? And if so, why?