Sorry, I'm rarely here before mid-afternoon.
No, I don't add sugar, the easy blend yeast has all the additives it needs! I cover it loosely with a clean tea-towel both during rising and proving.
!f it's dense, you probably needed to leave it slightly longer to prove. It's always a bit of a quandary as too long and it can collapse: too little and it's heavy.
...and of course you can use a tin:
The mix for 2 loaves was:
1kg strong white bread flour
640gm water
45ml (3tbsp) veg oil
17gm salt
14 gm 'easy bake' yeast - I use the Allinson's one. If you use sachets, that's two. It's cheaper to buy a tin, in which case you can save even more money by only using 12gm!
The bread may have a slightly lighter texture with slightly less oil. But, I add extra to make the bread keep longer as there's just the two of us now the kids have left home. (That said, there's not many days that we're not feeding one or other of them and their partners!)
HTH
Phil