Youngs Harvest has a range of bitters, the Yorkshire Bitter was the most bitter, then the Bitter, and the Scottish Heavy was the smoothest of the three, the latter was to have 1.5 kg of sugar the other two just 1 kg of sugar. Of the three done as instructions the Scottish Heavy was more to my taste, and it would stand 2 kg of sugar which lifted up the ABV.
I have just started replacing sugar and to be frank not sure if worth while, dried malt is expensive and by time you add the costs together, the twin can kit very quickly becomes cheaper, and better than adding spray dried malt or brew enhancer.
I note the Coopers English Bitter has just 500 grams of light spray dried malt, and so not as expensive, but low on the ABV. However even if low ABV it tastes good, and I can drink so much more in an evening without getting drunk, it makes some sense to keep the ABV low.
I am interested in how your experiment works out with the other two in the range, even if I go for other end of the range the whole idea of swapping sugar for other fermentables is now something I am looking into, but 1.5 kilogram of Spray Dried Malt in Wilko is ã13.50 add to that ã12 for kit and that's ã25.50 compared with Woodfords Wherry at ã20. Both end up with putting 3 kilograms of fermentables in the fermentor so likely the same strength.
I now can actually compare my brews, when I started I tried messing around with the brew, and I was not getting consistent results, I would do one in March and it was great, so would put on another in August which was a flop, then I realised how important temperature is. Unless your keeping the brew temperature the same then the results can be as much to do with temperature as what you have put in the brew.
OK some brews have a larger range to others, Coopers can be brewed hotter than most. But I rejected some brews as useless just because I have brewed in Summer when it was too hot. It was not the kit at fault, it was me.
I messed up with a few brews even after I had some temperature control, and I am only just starting to taste brews which where kept cool enough. I had misjudged how much heat was released by the fermenting. So the December brew was A1, but by March the brews were getting a thermal run away. My idea was to keep as cool as I could to give some room for the temperature to climb, so starting at 18ðC so it could over shoot and still be below 21ðC which I regard as the upper limit. However they would hit 24ðC before settling down using an old fridge as an insulated box, once the ambient hit 14ðC really I need cooling.
It was well into the summer before I had got a new controller and was able to stop the run away. So my attempts are only just reaching a point where I can test them. Early tastes of the brews seem to show the using of the freezer and controlling the temperature has paid off. When brewing in the kitchen I was actually better off than in garage. As the heat could leave the fermentor. I thought I was clever moving into garage using the fridge of the old fridge/freezer as an insulated box, but I made an error.
So now waiting for Christmas when a whole range should be ready to drink and I can compare them all, and decide what to do in the future. But early tests seem to show the two can kit is the way to go.